BW's right about the current remnant and Rom 11:5, but the use of the end of Rom 11 has many flaws in it. And the 9:28 material is about Paul's present not our future.
Actually the oldest commentary on Dan 9 is prob Josephus which I put in its own thread. That's after Jesus on commentary on 3 parts of it in Mt 24 & //s which is not futurist anyway.
You claimed that Josephus said this in Wars, Book 4, ch 7, prgr 386. Cornfeld's edition was published by Zondervan.
After long searching, I finally found it in William Winston's translation, which reads slightly differently that your quotation, but it is essentially the same.
“These men, therefore, trampled upon all the laws of men, and laughed at the laws of God; and for the oracles of the prophets, they ridiculed them as the tricks of jugglers; yet did these prophets foretell many things concerning [the rewards of] virtue, and [punishments of] vice, which when these zealots violated, they occasioned the fulfilling of those very prophecies belonging to their own country; for there was a certain ancient oracle of those men, that the city should then be taken and the sanctuary burnt, by right of war, when a sedition should invade the Jews, and their own hand should pollute the temple of God. Now while these zealots did not [quite] disbelieve these predictions, they made themselves the instruments of their accomplishment.”
This was in Wars of the Jews, 4.6.3, not 4.7.386. But that is a small matter.
What is of greater significance is that it is pure speculation to conclude that this is a reference to Daniel 9, Daniel 8, or any other scripture.
Indeed, this same William Winston, who translated the "Complete Works of Josephus," made the following comment about the statement by Josephus that you quoted:
"This prediction, that the city (Jerusalem) should then "be taken, and the sanctuary burnt, by right of war, when a sedition should invade Jews, and their own hands should pollute that temple;" or, as it is B. VI. ch. 2. sect. 1, "when any one should begin to slay his countrymen in the city;" is wanting in our present copies of the Old Testament. See Essay on the Old Test. p. 104--112. But this prediction, as Josephus well remarks here, though, with the other predictions of the prophets, it was now laughed at by the seditious, was by their very means soon exactly fulfilled. However, I cannot but here take notice of Grotius's positive assertion upon Matthew 26:9, here quoted by Dr. Hudson, that "it ought to be taken for granted, as a certain truth, that many predictions of the Jewish prophets were preserved, not in writing, but by memory." Whereas, it seems to me so far from certain, that I think it has no evidence nor probability at all.” This comment was made as note (10) in his endnotes to book 4.
So the claim that Josephus was commenting on the prophecies of Daniel is pure conjecture, unsupportble by analysis of the text.