"Many would say that this does not leave time for the 7 years of tribulation and I say find the 7 years in the book of Revelation and then we will talk".That's a good observation. It isn't a seven year tribulation. Christ told us about it in Matthew 24 and Mark 13:
Mark 13:20 And except that the LORD had shortened those days, no flesh should be saved: but for the elect's sake, whom He hath chosen, He hath shortened the days.
In Rev.9:5 and 9:10 He tells us the time it is shortened to.
Many believe that the 7 years of tribulation are from the last week of Daniels 70 week prophecy. My studies have shown that the first half of the week have been fulfilled and that the last half or 3.5 years are yet to be fulfilled. My studies have shown that the remaining 3.5 years are the 3.5 in the book of Revelation.