Riker,

You said originally that you could spend as much as $6000 for the projector and screen. Well a quick search found the Epson 1080ub for $3000 or less.
Link: http://electronics.pricegrabber.com/projectors/m/60743099/

An anamorphic lens doesn't come with most projectors and is about $2000. That leaves $1000 for the screen. It is easy to find a good one for that price. If you do a diy one then you will probably have quite a bit of that $1000 left. I think that sirquack did a 2.35:1 screen diy but can't remember for sure. Maybe he will be around to say if this is difficult or not.

As far a picking the screen height for your seating distance in your theater I'll try to explain it again since maybe it was confusing the first time. All that you have to do is find some 1080p display that you can view a blue ray on that was shot in 16:9. Move a distance away so that you like the distance away from the display height-wise. Divide the height away from the screen by the height of the 1080p screen that you are viewing and get some number between 1.5 and 4 (probably around 3 or 4 but you may like sitting close). Now, decide how far that you want to sit away from the screen in your room (measured in inches). Take your distance away from the screen that you want to sit and divide it by that number you found that was between 1.5 and 4. This is your screen height that you want in inches. If you multiply it by 2.35 then you get the width of the screen in inches. Now you have the dimensions of the 2.35:1 screen for your room.

- Nick