STR-DH800 7.1-Channel plus some speakers? I want to build a home theater system for my new Sony 46 inch TV. I am interested in Sony BDVE500W 5.1 Channel home theater system, but I already have a Sony BDP-N460 Blu-ray Disc Player and I do not have that much space for those big speakers. Now I am thinking about buying Sony STR-DH800 7.1-Channel receiver, Sony SS-CN5000 Dual 5.25" Center Channel Speaker and Sony SS-B3000 Bookshelf Speakers with 8" Woofer instead to build my theater system for my small living room. Are they good choices? Do they match each other? Also, is that Sony STR-DH800 receiver necessary? Can I just connect those speakers to my TV audio output directly? It is very expensive ($272) and I want to be cautious before purchasing them. Thanks for your opinion!