Less is more!!! You’d be better off with a great 5.1 system getting a better performing receiver. Get a good receiver that also does good stereo. Anthem MRX520 with Paradigm Premier or possibly Prestige Speakers and one of their new Defiance Subs - you’ll do much better than a $1k 7.1 receiver with more speakers of less quality. A good dealer can show you why that’s the case.