Villain is not good. Older guy, says he plays a lot but is very amateurish. I have 27K, Villain probably has 60K.
I 3bet Villain last orbit and took the pot down with a bet on the flop. I've possibly been the most active player at the table over the course of the day, less so in the last level though.
150/300, no ante.
He raises UTG+1 to 750. It's a fairly tight range. I call J

9

in MP. 3 people call behind.
Flop (3750) is A

8

7
Checked to Villain and he bets out 3,000 quickly. I'm as sure as I possibly can be that he has AK/AQ/AJ/ATs, but I guess I can't rule out 88/77. I don't think he'll fold AK, not really sure what he'll do with the other big aces.
Do you raise/go with it or do you call?