Sty(welcome back), I'm not really following the WAF here. As Randy mentions, the M22s are quite a bit bigger than the QS8s(in the vertical dimension), and this would seem to be at least as objectionable as the QS8s protruding about 3" more.
If this nevertheless is the case, going with the M2s instead would save some money, and crossed over at say 90Hz would serve just about as well as the M22s for surrounds. The smaller size would presumably help the WAF even more.
If this also means that the setup will be 5.1 with no back surrounds, then the Ms should be positioned maybe 2-3' farther back than the listening position and a couple feet above ear level.
