I totally agree with JonfromCB. On this forum, all you'll get is advice on how to pinch the very last penny, which, in a higher-end HT, is not where you want to focus at this point. You're a long way away from speakers. In fact, you shouldn't even be thinking about speakers yet.
You should be designing the room, starting with wall construction. Decide if sound isolation is important to you, and then decide if you want to go to the lengths needed to soundproof the room. Once that's decided that, work on screen placement as well as placements of the front and rear rows, riser height, and projector mounting height, which will depend on screen size, screen material and projector placement. To figure those things out, you need to decide on projector resolution and brightness.... etc.etc. etc. Once you have all that done, you can start to think about speakers. At that point, you'll need to decide about speaker type, (towers, satellites or LCR's), speaker placements, installations, (in-wall, on-wall, in-room, baffle wall, etc.) (Actually, if you want to use a baffle wall, that should be decided early on also so it can be designed into the wall construction phase.)
A dedicated Home Theater should be designed as a *SYSTEM*, with all the pieces interrelated to the others. Speakers can wait. Figure out the room first. And don't forget about acoustic treatments.
The guys in the dedicated theater forum have the expertise you need to help you with ALL this stuff. It can be a very fun project, but you need more and different advice than anything you'll get here.
Good luck and have fun.