I think the turn bet is fine. The call on the flop is hard to interpret. He could be calling down with AQ or AJ and you decide to jam the pot because you read him for a flush draw so I think less than pot is fine. You are only giving him 2.5 or so to 1 on a 4 to 1 shot, so as long as you don't pay him off, you did fine.

I think the river is a fold. I don't think I have ever seen a huge overbet like this by a bad player when he didn't have a strong , close to nut hand. Also, your read that he is a passive player forces me to lean towards folding.