Full tilt 150 32k guarantee 77 line chk

[Bond18]

Man my online game is super rusty. Is the cold call pre optimal?

Button: 1800
Hero: 2900
Blinds 15/30

Hero holds 7 [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/heart.gif[/img] in SB

Preflop: Folds to button, button raises to 90, hero calls, BB folds.

Flop: Q [img]/images/graemlins/diamond.gif[/img] 6 [img]/images/graemlins/spade.gif[/img] 6 [img]/images/graemlins/diamond.gif[/img]
Hero checks, button checks.

Turn: 2 [img]/images/graemlins/diamond.gif[/img]
Hero bets 135, button calls.

River: T [img]/images/graemlins/diamond.gif[/img]
Hero checks, Button breifly thinks then bets 390, hero?


Thoughts up to this point?