I need some recommendations on my room setup. I am attaching a picture here to show the layout. It is all currently framed up, I just need help in picking the correct projector and how to possible wire for speakers...

This is in my basement by the way. The overall measurements for the room are 21' long x 13' wide. My real dilemma is on the wall where the screen will go. After building the tray ceiling down, I only have 90" of height (from the floor to the underside of the tray) and about 150" of length. I REALLY want to go with a 135" screen but after laying it out last night I only have like 4" from the floor to the bottom of the screen. That definitely doesn't leave enough room for a center channel speaker and the towers on each side will be pretty snug. Everybody always says go with a screen as big as you can but do I maybe need to consider a 120" screen instead?
Also I need some help on projector recommendations... My budget is around $2500 and that needs to include the projector, screen and mounting. I was thinking about mounting it under the tray above the platform but I am afraid that will hang pretty low right over the seats. I could bring it up to mount it off the ceiling and that would give me some extra room. I will have to go back tonight a measure my height to find out exactly what that is. 3d is not a necessity, but since I have a 12 yr old and a 4 yr old, they would probably like to enjoy that kind of stuff. The projector will be mainly used for watching sports, play xbox360 and watching some movies.
As far as speakers go, I was thinking about going with the MartinLogan motion 12's from my fronts. Still up in the air on what center, surrounds and sub to choose with these since I feel like they are pretty powerful. I really like the yamaha A720 receiver, especially with the 2 zones since I will have a set of speakers in the pool table room where I will be hanging another tv.
What gauge wire would be acceptable to run in all the walls? Any other special instructions you guys can think of? Thanks!
This is in my basement by the way. The overall measurements for the room are 21' long x 13' wide. My real dilemma is on the wall where the screen will go. After building the tray ceiling down, I only have 90" of height (from the floor to the underside of the tray) and about 150" of length. I REALLY want to go with a 135" screen but after laying it out last night I only have like 4" from the floor to the bottom of the screen. That definitely doesn't leave enough room for a center channel speaker and the towers on each side will be pretty snug. Everybody always says go with a screen as big as you can but do I maybe need to consider a 120" screen instead?
Also I need some help on projector recommendations... My budget is around $2500 and that needs to include the projector, screen and mounting. I was thinking about mounting it under the tray above the platform but I am afraid that will hang pretty low right over the seats. I could bring it up to mount it off the ceiling and that would give me some extra room. I will have to go back tonight a measure my height to find out exactly what that is. 3d is not a necessity, but since I have a 12 yr old and a 4 yr old, they would probably like to enjoy that kind of stuff. The projector will be mainly used for watching sports, play xbox360 and watching some movies.
As far as speakers go, I was thinking about going with the MartinLogan motion 12's from my fronts. Still up in the air on what center, surrounds and sub to choose with these since I feel like they are pretty powerful. I really like the yamaha A720 receiver, especially with the 2 zones since I will have a set of speakers in the pool table room where I will be hanging another tv.
What gauge wire would be acceptable to run in all the walls? Any other special instructions you guys can think of? Thanks!

















