AKo OOP vs semi-unknown MAWG, turn is best card in the deck

1/3 NLHE 9 handed

V - Chip leader MAWG. I've seen him once or twice before. I know he's a losing player but he's not as bad as some. He understands to raise with good hands and fold bad ones and ABC but I don't have hardly any history with him and only a few minutes at the table so far to see him play. He never 3-bets pre and has limp/called a few times pre. Covers. UTG.

H sat down a few orbits ago and hasn't been playing well. Ran his first BI into AA when guy who never raises suddenly 3-bet me huge...and got stacked and rebought and is now up to 700$, clawing his way back to even. 700$. BB.

---

BTN straddles 6, SB calls, H in BB to 25 with A♥ K♦, V 3-bets to 70 next to act, folds back to H who calls. HU OOP.

Flop 150 - J♣ 9♥ 7♥

H checks, V bets 70, H calls

Turn 290 - K♥

H checks (anyone lead?), V bets 155, H calls

River 600 (405 back) - 2♠

Hero?