Looking at the HD-SDI approach we get the following:
Using HD-SDI meeting SMPTE 292 (ref. c) and a moderate quality cable like Belden 1695A (ref. d) gets us assured working distances of 100M (20dB loss at ½ clock frequency of SMPTE 292 see ref. h),
I'm on the horns of this issue this week myself (Epson L1405 projector), and I was speccing 1694A to go about 150 ft at 1080p60. Is that beyond the pale for 1694?