You should also be aware that your receiver's rating of 80 watts per channel isn't likely to be that with all channels driven. Those ratings are usually given with the qualifier given (in small font) "2 channels driven, 20hz - 20khz @ 8Ω" and not likely to give 80 watts each to all 7 channels at once.
No matter though, because in a room that small if it could deliver that much you would soon be deaf.
I have to a agree that you would be much happier with the Philharmonic AA speakers and the Dayton subwoofer than you would with a Blackstone (Polk) kit.