ok, Thanks for the input. I looked up some more info on bi-amping and seems I will most likely be doing a passive amping. So, I may give it a shot, but my speakers are pretty efficient, so I may not hear any improvement. In that case, I'll simply go with orginal plan and use them for the mains.
I don't really plan on a 7.1 system. I have plenty of speakers for it, just the way the living room is set up, don't have the side walls for it.