You might want to do a bit of research, checking my notes from when we cleared the Bose-X at work, they show a microphone impedance of 220-2200 Ohms, and the only common headset within your 50-150 limit as the DC10-13 at 50 Ohms. 50-150 seems increadibly narrow and would exclude the vast majority of headsets, probably unnecessarily.
If you want to PM me your email address, I can send you our report - it might help since I think that we probably jumped through rather more hoops clearing the Bose (due to a very odd aeroplane with an erratic and utterly nonstandard intercom system) than just about anybody else ever would.
G