The inference is wrong, so the conclusion is wrong. The word in Dan. 12:12 is alph - a thousand, while the word in Dan. 8:14 is alphim - two thousand, as the supphix "im" indicates "two."

Mark,
I'm not sure EGW believed Miller's and Smith's view of the trumpets was correct, or that she endorsed the teaching of Josiah Litch about the 6th trumpet (which seems to include a mistake). Neither am I certain that she makes a future application of the trumpets. In fact, I have no definite position about the trumpets. . .

After the number of the days in which ye searched the land, even forty days, each day for a year, shall ye bear your iniquities, even forty years, and ye shall know my breach of promise. Num 14:34

Rev 10:10 And I took the little book out of the angel's hand, and ate it up; and it was in my mouth sweet as honey: and as soon as I had eaten it, my belly was bitter.
Rev 10:11 And he said unto me, Thou must prophesy again before many peoples, and nations, and tongues, and kings.
Rev 11:1 And there was given me a reed like unto a rod: and the angel stood, saying, Rise, and measure the temple of God, and the altar, and them that worship therein.
Rev 11:2 But the court which is without the temple leave out, and measure it not; for it is given unto the Gentiles: and the holy city shall they tread under foot forty and two months.
Rev 11:3 And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth.
Rev 11:4 These are the two olive trees, and the two candlesticks standing before the God of the earth.
Rev 11:5 And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed.
Rev 11:6 These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will.
Rev 11:7 And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.
Rev 11:8 And their dead bodies shall lie in the street of the great city, which spiritually is called Sodom and Egypt, where also our Lord was crucified.
Rev 11:9 And they of the people and kindreds and tongues and nations shall see their dead bodies three days and an half, and shall not suffer their dead bodies to be put in graves.
Rev 11:10 And they that dwell upon the earth shall rejoice over them, and make merry, and shall send gifts one to another; because these two prophets tormented them that dwelt on the earth.

Eze 4:1 Thou also, son of man, take thee a tile, and lay it before thee, and pourtray upon it the city, even Jerusalem:
Eze 4:2 And lay siege against it, and build a fort against it, and cast a mount against it; set the camp also against it, and set battering rams against it round about.
Eze 4:3 Moreover take thou unto thee an iron pan, and set it for a wall of iron between thee and the city: and set thy face against it, and it shall be besieged, and thou shalt lay siege against it. This shall be a sign to the house of Israel.
Eze 4:4 Lie thou also upon thy left side, and lay the iniquity of the house of Israel upon it: according to the number of the days that thou shalt lie upon it thou shalt bear their iniquity.
Eze 4:5 For I have laid upon thee the years of their iniquity, according to the number of the days, three hundred and ninety days: so shalt thou bear the iniquity of the house of Israel.
Eze 4:6 And when thou hast accomplished them, lie again on thy right side, and thou shalt bear the iniquity of the house of Judah forty days: I have appointed thee each day for a year.

I'm glad you're open to a possible future application of the trumpets.

It’s interesting though the three greatest men of faith in scripture – Moses, Elijah and Christ - all spent 40 days in the same wilderness fasting and praying and communing with God. The Spirit is saying by this that whereas the 40 days of privation endured by the champions of faith had the intended result - strengthening these men for their work - spiritual Israel may languish in unbelief for years rather than days in failing to meet the same test.

Historically, God’s people were led into the wilderness and nourished in the wilderness for 40 years and again for 1260 years. On the Millerite and pioneer charts of the 1840’s and 50’s, there are two 1260 day periods that span 2520 years, the first period the punishment of literal Israel and the second the punishment of the church, spiritual Israel. It would be consistent with this pattern for the church to find itself again in the “wilderness” as it preaches the third angel’s messages under intense persecution for a literal 3.5 year period while the dragon attempts to carry her away with a flood. Whereas the Millerites and the Seventh-day Adventist pioneers believed the two 1260 year periods to be the scattering and chastening time, when men and women of faith at the end of time lead the battle charge and are led once again into the wilderness of testing, what took a year will take a day.

So the time periods are reversed – in Numbers it’s a year for a day but here it’s a day for a year.

Now some have tried to say that here God is letting a year of iniquity be represented by a day of Ezekiel's affliction. Thus they claim that Numbers 14:34 gives a day for a year, but Ezekiel 4:6 gives a year for a day. They say these two equations represent an inversion and are not equivalent equations. Yet see the phrase repeated in each of the verses: A DAY FOR A YEAR, A DAY FOR A YEAR.
The text in Ezekiel is not really an inversion at all. "It is not backwards". Read it over again, and see that the message or symbolic prophecy is in days, while the actual fulfilment was in years.
Ezekiel is commanded by the LORD, to act out a prophecy, which is recorded in chapter four. Just because a prophecy is acted out rather than spoken doesn't mean it isn't a prophecy. Yes, he acted it out for literal days, but these days are still symbolic for real events that are not symbolic.
http://dedication.www3.50megs.com/dan/year_day.html

So, to me things are clear. Daniel's message was sealed until the time of the end. As Daniel inquired when the time of the end would be, the answer was that it would be after a time, times and a half (1260 days); there is then a mention to the 1290 days and blessing on those who come to the 1335 days. Then it's said that Daniel would stand in his lot at the end of the days. Ellen White says that the time of the end would be at the proclamation of the 1st angel's message; since then Daniel is standing in his lot. She says this was in the advent movement of 1840-1844, but specially in 1842/1843. Remember that according to the Historicist interpretation the 1335 days end in 1843. So it's clear that the 1260 go from 538 to 1798, the 1290 from 508 to 1798, and the 1335 from 508 to 1843. There is a perfect harmony between this interpretation and what the Bible and Ellen White say.

Sure. Verses 1-3. They portray the very end of the time of the end. The verses following these speak about the beginning of the time of the end.

About this, I would quote the following: