AKs in a BB NL600

[wtfUmoron]

Party Poker. Villian is MrCall912, said that he is a 25/50NL player. WTF is he doing on 600 then?
He is like 40/13/1.4 AF and tend to call with 2d pair with position and OOP, also he like to bluff and raise with a draw on turn even if there 4 people and he is on the btn.

So it's a 6max table I'm in a BB with AKs (hearts)
My stack is 1000$ or so
He had 1500 or so.
everyone folds He is in CO just limp's btn folds SB folds.
I make it 36$ he calls. Pot is 74
Flop: As 8s 9d
I bet 58 he calls.
Turn: 6s
I checked, he instantly bet's 180, so what is a better line here?
I called.
River: 7d
I checked He bet's 400...Hero?