Thanks for the inout guys.

I fixed the link to the photos, perhaps that would help a bit more.

In addition, I have a 7 week old, soon to be a speaker poking toddler. I would consider 'child-proofing' the area as well with a smaller sat based systme like Orb Audio. I'm tempted to pick up some Orbs and try them out as rears.

I've never used 'mix-matched' speakers before as I believe in keeping them all the same as far as build, but I might be will to try, though it would be a bit tougher given the Klipsch Horn.