Thanks for the room drawing, that helps get an idea, and the ceiling height really does open up a fairly long list of projectors, but I would still lean twoards the brand new 8350 from Epson because of the use of the newer LCD panels in it, longer life lamps, brighter, etc. For the money, that's where one of the absolute best deals is right now.
The Mits certainly is a good product, but I think you get more for the same, or less money, witht he Epson.