hI, I'm new to all this and I need some help. I'm looking to set up a movie screen outside. It will probably get used very little. I definately want to go as cheap as possible. I see projectors priced from 150.00 all the way up to taking a second on your mortgage. I'm going to end up with the projector approx 14 feet from the screen. What do I look for in purchasing a projector. It will be used very little. So I'm lost as far as throw, brightness, bells and whistles. etc. Help!