Mods feel free to delete this thread if you want. I am curious about installing a new home tv projection system. The spot I have in mind would accommodate an 85" X 48" screen which would be 100" diag. I think I want a projector mounted on an approx. 40" arm immediately above the screen. Is Best Buy a good source? I live in Manhattan so not a lot of installation options I know about. Any suggestions for things to be careful about or to enhance the system would be appreciated. I currently have a 60" HD in that spot. I don't want to regret the switch so I am looking for useful guidance. I am not strong with tech equipment so would need someone to install it. What type specs would I want in the system? Anyone who has one I would like to hear your opinions.Thank you very much.