Originally Posted by
sludgeogre
I think the towers would probably be fine for your room, I don't think they are as picky as Axiom's gear, I've heard that their speakers can be very finicky. I have had my Towers close to walls and open areas and never had an issue, personally, but the big ol' dogs present an entire other issue.
Doing two Horizons in that setup would be totally fine, but yeah I wouldn't want to wall mount them. I'd get some beefy shelves and just put them on those, up against the wall or close to it. Just make sure they are long enough to hold them. I would also run them full range, they have such tight impact it's awesome. Even with the subwoofer, I very much enjoy running mine full range.
Dual subs would also be the way to go for that room to even out the frequency response. The F8 isn't really necessary because it can play really high and you don't really need that, an F12 will give you 1.5 dB more output per sub, and it just goes up from there. Even an LV12R would be 2.5 dB more output than the F8 at 20 Hz, so I think that would make more sense for your budget and your setup.
Another option would be to wait for the Lunas, which would be really easy to mount right to the wall, and pair those with dual F8's crossed over and set to small. That would be really sweet indeed.