Wow Chester, registered in 02 and first post.
Welcome!!!!
To be honest with a good sub and proper calibration and setup, the m22's would work in that room.. To answer your question the m60's would be totally adequate for that space, as would the m80's. What receiver are you using to drive the system?
My room is 30ft x 31 x 9 and I've owned both m60's and m80's, they both were plenty, I just got sucked in by the m80 club members.
For 7.1, you would want the Qs8's directly to the side of the seating area, and the m22's behind you a good ways. Actually another setup of Qs8's for the rears might be good, if you have the room behind you?
