WAF does play a part, but these are older "bookshelf" type M0's which i've owned for a while, which is why i was really looking for input on placement rather than equipment suggestions. The wiring for 7.1 is not a problem as the house is currently under construction, but it sounds like i may not get any real benefit from 7.1 with the constraints I have.

Maybe i will use the second set of m0's as rears for the kids' set up in the basement