2/5 PLO, $10 straddle often in play, though game has been playing somewhat passive with hardly any 3b preflop.
Stacks $1000 effective
Hero dealt A
A
9
8
$10 straddle on, 1 limp in front, hero raises to $40 in MP.
C/o, button, and EP call.
4 to flop ($160)
Flop J
9
3
X to hero, hero bets $120. Only button calls.
Turn ($400) 5
Hero checks, button checks.
River ($400) 4
Hero checks, button bets $170.
Hero?