Small Space Large Screen Help

[CaseyW]

I run a touring company that takes programs to schools, community centers, libraries, and theaters around the country. We have a new production coming up we are hoping to use with projections. My limitations are...screen size is 90" high by 120" wide (so a 150" diagonal)..we don't always have control over lighting in different spaces....and we need to keep the projector as close to the screen as possible since some spaces we play are pretty tight. I need something bright with a short throw. What would you suggest?