Which Projector in the following situation???

I have a Dalite 106", 92x52, 1.3 screen now and have the 4:3 INFOCUS LP-350. I use this for DVD viewing only, with a room that is not all that light controlled, but do most viewing in the evening anyway. I would like to go to a 16x9 projector and use the progressive from my EAD TheaterVision. RGB if possible, RCA's as a secondary method.

The room is 20 by 14, the viewing position is 13 feet from the screen, and I would like to mount the projector on the ceiling just behind the sitting position, or 14 feet from the screen.

I do not know how to calculate the throw to make the proper decision, but I would like it to be about 14 feet from the screen, if this is possible.

I have thoughts of the Cinema 13HD, Infocus ScreenPlay 110, Sanyo PLC-XP21N (or a copy) or one of the Sony VPL-VW10 or 11HT's. Not ruling out the Sanyo PLV-60HT either. I am REALLY hoping to keep the price in the $3,500 range, so preowned is fine.

Regardless of price, please let me know what you think is best so I can look seriously in that direction. I might have to spend a few dollars more for the 'right' one, and will save some cash if need be.

Dan