I'm just going to through a few of my personal "truisms"..
- Wall mounted or inwall speakers will not sound as good as non-wall mounted speakers at the same price point
- Speakers are totally personal -- what will sound good to me might not sound good to you
- You can't go wrong with subs from SVS
- Do NOT forget acoustical treatments for the room. Properly set up treatments will dramatically improve the imaging and overall sound of a system
- Do not buy high priced cables/wire. Buy all of that stuff from monoprice.com or bluejeanscable.com.
- Unless you decide to go for separates, I'd buy a receiver from Denon, Yamaha or Onkyo. Find the feature set you like best and buy that one.
- A good remote is a great thing to have. Harmony remotes are a good place to look. Pronto or higher end Universal remotes are some others to look at.
- A bookshelf speaker will out perform a similarly priced tower speaker.
As for speaker brands, there are tons that I would recommend having a listen to. A short list would include Paradigm, Usher, Monitor, PSB and even the speakers from SVS (although, being online makes that a little more difficult). If you want to step up the price a little, add Dynaudio to the list. The other manufacturers have speakers at all price points, Dynaudio seems to stick to the higher end stuff. If I had wads of cash burning a hole in my pocket, I'd probably be looking at something in their Contour or Confidence lines.
I'm not going to be much help with the choice of projector -- I'd get some opinions here and maybe take a look at what's reported at projectorcentral.com and/or projectorpeople.com. Screens would be another area where I don't have much experience. Carada.com was supposed to be a great online source for screens at a reasonable price.
Finally, I'd read
this before auditioning speakers.
Good luck and keep us informed on your progress!
And more importantly, enjoy the process!