I have a Mitsubishi HC1500 projector and was wondering how big of a screen I can go with while still having a good picture. I have a 120" right now and the picture is great but want to go bigger. My farthest couch is 25' from the screen and nearest is about 18'.... the projector can be as far as 25' as well so no problem there... its at 17' with the 120" screen. Could i go with a 150" screen do you think?