Maybe interesting 10-25 river

[El Diablo]

3-handed, but everyone is playing quite nitty. Betting/raising standards feel like a full game.

$3000 effective stacks.

SB standard opens for 75. I call w/ 78c.

Flop is 9T4r. He bets pot 150. Sometimes I raise, sometimes I call. This time I decided to call.

Turn offsuit 6. He leads 120. WTF? I raise to 450. He thinks a bit and calls.

River another T. He checks. 1350 in pot. 2300 behind. My plan?