Well I discard the view that Daniel 8 and 11 are about historical events, namely because there is no logical break in the narrative to say "well this part is about Alexander and Antiochus Epiphanes but this part is about the end of the age", and Gabriel said in Daniel 8 that the vision was an end times vision, all of it.
and so things that are in Daniel 8 and 11 have to happen first. Persia (Iran) has to lash out in all directions when they reach their 4th "king" (we're still on #2), "Javan" (which gets translated to Greece but isn't the actual word in the Hebrew, it's Javan one of the descendants of Japheth in Genesis 10, identifying a people group that settled around Istanbul which was Greek in History but is Turkey now) conquers them, then that first king of Javan is killed, it's divided into 4 regions.
Antichrist rises up from the Northern Region of those 4.
None of those things is in play right now, and so we're not within 7 years yet. nor are we on the eve of the covenant being confirmed by the Little Horn either.
It's all years away, and so.. I think we should be watching for Iran to have a 3rd, and then 4th "King" the 4th being more powerful than the 3 preceding (the 12th Imam?), now that could happen shortly. Khamenei is old and has had his prostate cancer return so he's on borrowed time. He'll be succeeded by the 3rd supreme leader. How long that leader's reign could last it could be short. If a 4th leader is more powerful than any of the previous 3 it could be sweeping and quick. If anything I think 2028 or 2030 is more likely to be the start than the end.
I agree that Dan 8 & 11 are end times.
Dan 8's 2300 days is easily explained in terms of Revelation:
the 5 months of the 1st woe (Rev 9:5) + the hour, day, month, year (Rev 9:15) + 1260 days (Rev 11:3 + 3.5 days (Rev 11:11) = 1809.75 days + 70 weeks (Dan 9:24's to finish the transgression, after the 1290 days transgression) = 2299.75 days
150 + 1 hour +1 + 30 + 365.25 + 1260 + 3.5 = 1809.75 days + 1 hour + 490 days = 2299.75 days + 1 hour = 2300 days
As to Daniel's fourth vision (Dan 10-12), the only timeframes we are given are: time, times, and half a time; 1290 days; 1335 days.
The 'man in linen' of Daniel 10 is the angel of Daniel 12 and is the mighty angel of Revelation 10.
Dan 10:4 On the twenty-fourth day of the first month, as I was standing on the bank of the great river, the Tigris,
5 I lifted up my eyes, and behold, there was
a certain man dressed in linen, with a belt of fine gold from Uphaz around his waist.
6 His body was like beryl, his face like the brilliance of lightning, his eyes like flaming torches, his arms and legs like the gleam of polished bronze, and his voice like the sound of a multitude.
Dan 12:7 And
the man dressed in linen, who was above the waters of the river, raised his right hand and his left hand toward heaven, and I heard him swear by Him who lives forever, saying, “It will be for a time, and times, and half a time. When the power of the holy people has finally been shattered, all these things will be completed.”
is
Rev 10:
1 Then I saw another
mighty angel coming down from heaven, wrapped in a cloud, with a rainbow above his head. His face was like the sun, and his legs were like pillars of fire.
2 He held in his hand a small scroll, which lay open. He placed his right foot on the sea and his left foot on the land.
3 Then he cried out in a loud voice like the roar of a lion. And when he cried out, the seven thunders sounded their voices.
4 When the seven thunders had spoken, I was about to put it in writing. But I heard a voice from heaven saying, “Seal up what the seven thunders have said, and do not write it down.”
5 Then the angel I had seen standing on the sea and on the land lifted up
his right hand to heaven.
6 And he swore by Him who lives forever and ever, who created heaven and everything in it, the earth and everything in it, and the sea and everything in it: “There will be no more delay!
7 But in the days of the voice of the seventh angel, when he is about to sound his trumpet, the mystery of God will be fulfilled, just as He proclaimed to His servants the prophets.”
The 'time, times, and a half time' that follows the angel swearing an oath to heaven is when the power of the holy people is shattered and then the vision is over. This is the same time period where the mighty angel swears an oath and says things will be finished at the 7th Trumpet - the 7th Trumpet will occur 1260 days later (same 1260 days as the 2 witnesses that follow in Rev 11. The two witnesses are the 'holy people' who are being shattered.
We don't really know when the 4 kings are to rise in Persia and what time-frame it ends. Presumably, the last king of Persia (the 4th one) is when God places His throne in Elam (Jer 49:37-39). When the 4th king arrives he wages war against the Greeks (possibly to Israel's benefit as the Greeks are oppressing them). We don't know what entity this king of Greece/ Javan is.
Is Greece/ Javan the leopard of Dan 7 that splits into 4 heads?
Does the king of the North even refer to the four winds splitting of the Leopard (Javan) into the kings of the N, S, E, W?
Is the King of the North referring to northern 10 tribes Israel? Would this make it the Daniel 7 4th Beast?
Daniel 11 is just a mess. The many wars here seem to be the Dan 9:26's 'until the end there will be war'.
It is entirely possible that the entire vision (Dan 10-12) is encapsulated within the 1290 or 1335 days.