I am about to ceiling mount a Mits hd1000u. Based on the manual, a 100" screen would have the projector 143 to 174 inches from the screen wall. I understand that distance can effect brightness, etc. Do most people pick a spot in the middle of that range or lean towards one side? Future flexablitiy is a consideration.

I tried to go as close as possible with my projector thinking it would be the best for image quality.