MilKat

My family may build a new home this fall, so I took initiative to plan out the home theater. My budget is about $5,000. I'd like to spend roughly half on visual and the other half on audio.

I've been doing some research on projectors and screens lately, and I've thought of using a painted wall rather than a screen. That plan would allow for a much nicer projector. I'm thinking, size wise, that the screen will be at least 100+ inches diagonal (16:9). There is plenty of room (20' x 20' x 9'), so I'd like to go as big as the budget will allow, but I read in a magazine that a screen larger than 110" would need an extra bright projector to do the job well. I never figured out how bright so I'm still hoping it could be done with a DLP projector in the $2-3k range.

Audio wise, I'm not very sure of what I'm doing. Most likely I will go with a 5.1 speaker set, receiver, and whatever else is necessary to get the job done. The center, left, and right speaker will be built into the wall, but I'm not sure about the sub or surround speakers. Does a sub still get the job done behind drywall?

Also, I'm a bit in the dark about video inputs for the projector. Since it would be hard to run cables to and I plan on using the system for gaming, is there a way to run the video to a separate controller which feeds into the projector?

Hopefully you guys can give me some good suggestions. Thanks.