3-betting and post flop aggression are two completely different things. There are going to be a lot of bad aggressive pre-flop players at your stakes, that are horrible and passive post flop. So I wouldn't confuse the two things.
Well, really there isn't much he should be raising with here unless he has 77 or A7. So if you were going to make a play, this would be the spot. But really, calling and allowing him to bluff his QT,QJ, air type hands is much more profitable. You just need to be prepared to call multiple streets. If you call the flop, he will likely slow down on the turn if he was just making a play based on his aggression numbers (although don't know sample size here).