I started actually thinking about that and that is not at all a good comparison. The verse says that 70 weeks are determined upon Israel. Those are 70 weeks in which God will deal specifically with the nation of Israel. He did not say 70 consecutive weeks. He only said 70 weeks (or 490 years).
Why do they have to be consecutive?
This is an example. (it's gonna be a stupid one but it will get my point across


I promise that I will walk 10 miles wearing a red shirt. However I end up walking 50 miles. At mile nine I take my red shirt off and put on my blue shirt, but then at mile 49 I put the red shirt back on and run the final mile. Have I not kept my promise? I think I have!
This promise the Lord made that he would deal with Israel for 490 years and that 483 years have passed while 7 yet remain still makes perfect sense to me.
However it seems to me for his (and most of your) theory of this to be correct, Titus would have had to invade Israel three years after the crucifixion of Christ. However it was closer to 40 years, so for the Preterist theory to work, there has to be a gap. So you all better start supporting a gap (even if you have the wrong length of that gap
