You’re actually running Tren for 5wks with the schedule you laid out:
WK 7: 1
WK 8: 2
WK 9: 3
WK 10: 4
WK 11: 5
As for the length of time, 5wks isn’t very long. Yes, 5wks will make a difference in how you look, but what’s the overall plan with this cycle, what’s the end goal?
The shutdown aspect, you’re going to be shut down in terms of natural test regardless of it being 5wks of Tren or 8 or 10 or whatever. You’re going to be pretty much at the same shut down level regardless.