i find that these are problably one of the trickiest situations to play in cash game holdem.

well you have position over him at least, thats a good thing.
what you can do here is call the flop cr, and see what he does on the turn.

His possible holdings right now, i would say, include AQ AK 33 66 maybe even AJ.
If u flat call the flop, and see what happens on the turn, chances are he will stop betting with the AQ AK, and check it to you. The potsize will be out of his control (ps of $100) on the turn, and therefore if he decides to make any substantial bet there, he would pretty much be playing for stacks, therefore if he decides to lead on turn it is more likely hes holding a set then anything else. Thus, u can call flop, and fold to a turn bet.

If he checks turn, then this is a good thing, in which case u can check behind and evaluate the river. If he checks river to me, i put him on a weaker ace, and proceed to value bet the river. If he leads out on river after checking turn, I may call depending on the betsize.

In any case, folding the flop is also not that bad either.