The QS10's are out of the question, too large. I do think I an squeeze in the 8's though. I may have to splice some speaker wire though for one of the speakers. I thought about that and could use one of my QS4's as a back center speaker. I have room in one spot but it would be a very long cable run probably about 30ft at least.

I'm wondering as well whether or not I would need the 5HP's rather than the 22's. Other than playing really loud which I don't do, I do play my movies loud but not insanely loud as I'm in a condo, what would be the benefit if I cross at 80?