I am installing a 100" Firehawk Luxus Deluxe fixed screen to use with a Sharp 9000. What is the correct wall height for the screen? Is the correct seating distance about 14' back? Also, is the projector mounting OK at 17'(ceiling)? The room is 23 1/2' X 14 1/2', 9' ceiling height. And what can be used to minimize light reflection if the screen is mounted 18" deep in a wall unit? Also, since I am trying to kill all these birds, what is used for some sort of lighting near the screen area that I have heard about? Is there something to the theory of eye strain reduction with dim lighting at the front? THKS.