Could you get a projector along with a pull down perforated scre en that allows audio to pass through? You could do a pretty awesome setup for $2000 and your large sound would match the large image. As long as you can control lighting your all set. Those of us with projectors in our systems can verify its awesome for concerts or any material and surprisingly cheap. If you need any ideas let me know.
Speakers in rear with TV in front. Will it work?
I have Klipschorn speakers forming an equilateral triangle with the sweet spot. Horn loaded subwoofers are on top of each K-horn. False walls are required for each Khorn/subwoofer pair. The false walls come out to the front of K-horns and subwoofers as required to get the maximum effect of the bass from each speakers. With the room having dimensions of 7.5 x 12 x 19 feet, it conforms with the "Golden Rule" to avoid standing bass waves. The problem is that there is no room for a 55 inch TV in the center of the room with the speakers including the false walls. Would it sound natural having the speakers in the rear provide sound for the TV in the front of the room? With the speaker channels reversed, the left speaker will provide sound for the right side of the TV as it should. The same change goes for the right speaker.