The room isn't that large and I'm not really sure why you initially stated a throw range of 8.5 feet since that really limits your screen size.
Example - if you chose the Viewsonic Pro8200 (DLP) projector your screen size would be limited to 54" to 83". Generally, the longer the throw range the larger the screen size.
This makes even a moderately bright projector too bright for a screen that small, the Pro8200 (2000 lumens) would be at around 62 fL.
So you should be looking at projectors at around 1000 lumens.
Do you prefer DLP or LCD projectors? Are you sensitive to DLP rainbows?
All additional things to consider.
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