Sorry I still don't have an answer for you, but at least your link is good.
Ive had an older Benq DLP projector for 3 years now, It still makes peoples jaws drop when they see the size of the image and the quality of the image (96"x54" image roughly). Ive had to replace one lamp so far. I would happily buy another benq myself based on how my current one has done.
The resolution should be fine for your intended use.
Anyone have a projector for this use, or recommend one?
With only 1100 Lumens you'll have to have a fairly dark room to get good quality. Even sunlight coming through a window will degrade your picture at that level. Look for 1800+, preferably 2000+.