That idea is not based on the Daniel Scripture, it is based on man's doctrines. The Daniel 9:27 verse is not about Jesus doing those things; it's about the final Antichrist at the end of this world, even as the Dan.11 "vile person" and earlier "little horn" prophecies describe that abomination event further.
The false assumption that all the 70 weeks prophecy events have to be fulfilled within the same time frame is a doctrine of men. That is where your idea comes from, and you... didn't think of it first. So please, spare us how you like to make of yourself a person so accurate in Bible method and wisdom.