That system would scream, of course. I think the mains would still be a bit more proportionally powerful than the subs you linked to, but like I said before, the subs that could actually scale up with those mains would have to be absolute beasts. The nice think about those subs is you could use them as stands for the speakers, as they are about the right height and the speakers themselves are too large for most conventional speaker stands. If you wanted to save money, look at the Klipsch speakers I mentioned earlier, they will also get louder than your ears can handle, although they won't quite match the efficiency of the ED Cinema speakers. I think they will be more refined than the ED speakers, given that is the fifth generation of RB-61s, and the ED speakers are the first time that I know of where ED has tried to tackle horn-loaded speakers at all.
I would say if you are listening to music mostly, then go with a two channel receiver rather than a 7.1 AVR. It'll save money and get you a better amp section, but you give up Audyssey room correction and on-board bass management. I guess you'll have to weigh the pros and cons.