The room is 22x17 rectangular with a 10' ceiling. no windows. painted dark gray and black. I am looking at maybe buying the panasonic PT-AE1000U pj. What size screen and what type and brand would you suggest? I have 100% light control in this room so will just about anything work? I'd like to spend around 500 or less on a screen if possible. I just need the screen to mount to the wall, no roll ups or anything liek that.