HT room
Cook,
Looks like you have picked some good options for the video. When selecting the rest of the components, keep in mind that the electronics, speakers, and sub can be from different manufacturers.
First, for your application go with a quality receiver w/out HDMI like the Yamaha RX-V659 for about $400. Get an Oppo digital upscalling DVD player or maybe HD-DVD as your main source and connect video directly to the PJ and audio to the receiver.
For quality sound from in-walls you will cost more than comparably performing bookshelf speakers. Check out the on-wall speakers from Axiom Audio for a compromise of asthetics and performance.
There are some high quality inwalls including speakercraft, triad, niles, and RBH Sound.
Check out the 10" subs from internet direct companies like SVS, HSU, and Onix (AV123.com). I recently got the SVS SB-12 Plus which is a good compromise of small size, asthetics (14" square and real wood veneer) and performance. Vello also makes some great small subs.
Good luck on the new HT.