The problem with this is trying to push a sqare peg in a round hole. No where does scripture give a time reference to when Stephen was killed. It is purely made up conjecture. And Daniel 9:27 is NOT about Jesus. He has already been cut off. THEN the city and sanctuary is destroyed, and we know that to be 70 AD, so the following verse is not going backwards no matter how hard you push. I do know that your view is the same as Seventh-day Adventists, but just as wrong. What is not being addressed is the fact that the second Jewish revolt was from 66 AD to 73 AD with 70 AD in the middle of the week when the Romans destroyed "the city and the sanctuary." Can't get any clearer than history.
Seeing as this was the second Jewish revolt, the astute are aware that the Great Tribulation will also be 7 years long, just as was the first from 67 BC to 60 BC, and second 66 AD to 73 AD. And all three are two halves of 3.5 years each.
“And after the sixty-two weeks
Messiah shall be cut off, but not for Himself;
And the people of the prince who is to come
Shall destroy the city and the sanctuary. 70 AD
The end of it shall be with a flood,
And till the end of the war desolations are determined.
27 Then he shall confirm a covenant with many for one week;
But in the middle of the week
He shall bring an end to sacrifice and offering.
And on the wing of abominations shall be one who makes desolate,
Even until the consummation, which is determined,
Is poured out on the desolate.”
Scripture doesn't say when Stephen was killed that's why I said that I believe it to be. I didn't claim anything about Daniel 9:27 in this timeline as I don't think it has anything to do with it