Reuben, the suggestion seems to have gotten a bit tangled-up, but operating within your budget my view is that the best way to go is M22 mains, no center(use the "phantom"), and QS4 sides positioned just a little(maybe 2')farther back than the seating position so that there'll be some phantom rear surround as well. When the budget permits you can consider a center speaker and back surrounds(all M2s in my view)and move the QS4s forward directly to the side since speakers are now handling back surround specifically.
