So, since I had 4-5 days yet to kill, I have decided to try out what step 5 (complete back room audio) will sound like by moving 2 Qs8 from the living room to the back room and using the 50 feet of spare speaker cables I had left... as is now a constant with me this month, 60 feet would actually have been better!
I already had 2 Qs stands. So, 1: QS-8 right, 2: QS-8 left and 3: M22s + old TV.
It sounds a lot more natural now! The final QS8 will get in probably late january or mid february. Hopefully, at that point I should also have a complete system in my living room!