I am getting ready to purchase my first screen and need some help on the size. I was wondering if a 140" 16:9 fixed screen was too big for my room? The room dimensions are 13'5" wide by 19'5" with a 9' ceiling. The seating would be about 3/4 way back. I am going to purchase a Optoma 3300 to go with it. Would the 140" be too big, or should I go with the 130"?