Hi all, I am looking to fit the right projector to a 25'x13.5' screen. I have experience with many large venue projectors as the barco 26k, hdx-w18, Panasonics, etc... My client budget allows only a 12000 Lum. projector. I suspect it won't be bright enough. What do you think? Also, does anybody know to explain or to link a guide of how to stack 2 projectors to create 1 brighter image? Thanks