40-80 AQo what should i do on the river here?

[mike l.]

i have AcQh in the cutoff in a good 40-80 game. there is an early raiser and he plays a bit on the loose side (limp utg w/ KTo, openraise early w/ 66, etc) and can be aggressive. i 3 bet and everyone else folds. he calls. heads up.

the flop is Ah Qd 8s. he checks, i check.

the turn is 4s. he checks, i raise, he checkraises, i 3 bet, he calls.

the river is 3s. he checks, i bet, he checkraises. what's my play?