2nd orbit, no real reads but he seems like a regular. He hit the timebank and thought for a looooong time on flop/turn. I'd like to hear your thoughts on bet sizing.

PokerStars No-Limit Hold'em, $4 BB (7 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($400)
UTG ($474.65)
MP1 ($398)
MP2 ($806.85)
CO ($74)
Button ($510.60)
SB ($402)

Preflop: Hero is BB with 6, 5.
5 folds, SB raises to $12, Hero raises to $40, SB calls $28.

Flop: ($80) 5, 6, 8 (2 players)
SB checks, Hero bets $64, SB calls $64.

Turn: ($208) 4 (2 players)
SB checks, Hero bets $124, SB raises to $298, Hero calls $172 (All-In).


Final Pot: $800