You can beam the image from your projector on your plain wall to get an idea of how big it will look, and build the screen later. My 2.35 screen is 10ft wide, and sometimes when sitting in the front row on fast action movies you find your eyes darting around to much. Now that my room is going to be smaller, and the front row closer, I may reduce the size of my screen a bit. Haven't decided on aspect ratio yet, but since the new panny's have auto AR adjustment, I may stay with 2.35.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85