Just sat down, Villain is unknown. Did I maximize value?

Prima Poker skin
No Limit Holdem Ring game
Blinds: $2.00/$4.00
5 players
Converter

Stack sizes:
UTG: $146.68
CO: $572.90
Button: $489.80
SB: $349.60
Hero: $396.00

Pre-flop: (5 players) Hero is BB with 5 5
3 folds, SB raises to $12, Hero calls.

Flop: 9 7 3 ($26, 2 players)
SB bets $32, Hero calls.

Turn: 5 ($90, 2 players)
SB bets $64, Hero calls.

River: 8 ($218, 2 players)
SB bets $140, Hero calls.

Results:
Final pot: $498