I concur with Airion. Why would you spend insane amounts of effort to get what you think is the best sound then choose options that don't make sense for the best image.
Dont get a crappy projector and screen. Only get a screen with holes in it if you absolutely have to. Even then dont do it.
some people obsess about audio but they cant even tell the difference in a blind test. EVERYONE can tell the difference if you improve your image.