Interesting call, I agree. We put him on a big hand based on your read. But I don't know that you can truly cut his range by much. I would've expected to see a reraise with AA/KK (unless he's waiting to pop you on the turn - which isn't very likely given his image). QQ/JJ/AK sooted are reasonable calls here I think.
Unless I added wrong, there was $4.85 in the pot on the flop. Your $3.00 bet (a little under 2/3 of the pot) gives him about 2.6 to 1 pot odds
with a lot of implied odds if he hits on AK or has you beaten already with AA. I would have preferred to see a larger bet, in my opinion. Something around 3/4 pot or a little more, I think (like $3.75 - $4.00). Based on his expected range, you are more likely leading at this point than not since he only called. So a larger bet here will tell you how serious he is about the hand and sweetens the pot for your most likely lead. Then lead turn no matter what.
On the positive side, I would not expect to be up against a set at this point since the cards are much lower that villian's expected PF range to raise 6x BB.
Edit: I have to either type faster or use fewer words, as I'm essentially agreeing with DM and BJ here but they got their responses in first.