As an example say your projector in on a table lens facing the screen and your throw distance is 10'. Turn the projector around and put a front surface mirror on the wall behind and bounce the image off the mirror onto the screen thus increasing your throw distance to 12'. The image will be reversed but most all projectors can reverse the image just as they can turn it upside down for ceiling mounting. As far as the glasses go they must be 144hz for the benQ (the HD33 only requires 120hz).
"Smart enough to know better, to old to care" ------ Dedicated Home Theater, Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 10TB DroboFS NAS