No, I do not see where it says 70 consecutive weeks are determined upon your people.
You, too, have a gap. You have the 70th week completed in 70ad.
So you are admitting that you make up gaps, that no one in Scripture ever mentions or is aware of, and they are not at the breaks of 7 or 69 anyway?
Just look again at the language about "the end."
The antecedent for "he will confirm..." is Messiah. In other words, within half a 'week' after his being cut off, the new covenant is not only launched, it is confirmed. He's referring to the beginning of the church. "Putting an end to sacrifice and offering" is in the doctrinal sense, like Hebrews says expansively. But he did say the house would be desolate, and there's that word: desolate!
The "end" however, is already described as less precise: it comes like a flood (v26b). There is 'war til the end' and decreed desolations (does not this expression have an amazing way of 'spanning' the NT period? The desolations are decreed early but take place as events a little later.)
Therefore, my conclusion is that v27a is a backtrack. Having detailed the 'end' and the desolations, he goes back to the upbeat Messiah and his accomplishments (v24) once more, and then back to the leader of the rebellion that desolates to finish 27b.
I don't have all the details handy, but have read excellent work-ups of the the "middle of that 'seven'" being 33 AD.
We would all be inclined to think that the antecedent for "He" in v27 would only refer back to 'the ruler who will come.' But I can't get the thing to resolve that way. And 'ruler who will come' reaches all the way back into ch 8. Thus making 8-9 a unit again.
We would also be inclined to think that the other name for Messiah (the ruler) would be connected to 'the ruler who will come', but again it does not resolve that way.
The most realistic thing about the whole paragraph is that there is trouble during the whole period! v25b.
