I can't lower the QS8's, as they would just get walked into, but I "may" have room to wall mount some Axiom wall mount speakers for side surrounds. They would not be as obtrusive. Not ideal, but better I think. As you can see from the pictures though, one would have to forward to the seating area. Would that be an issue? I can mount the left rear surround to the corner base trap, if being angled doesn't matter?

Hey Nick, do you have any pictures of the ceiling-mounted M3's?

Do you think they are a better choice than the round ceiling speakers mounted in an encloser of sorts?