Flopped set in $5.50

[catfan17]

PokerStars Tournament, Big Blind is t50 (8 handed) Converter on pregopoker.com

UTG (t775)
UTG+1 (t3330)
MP1 (t2725)
MP2 (t1185)
CO (t1055)
Button (t1785)
SB (t1185)
Hero (t1460)

Preflop: Hero is in BB with 6[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/club.gif[/img]
<font color="gray">UTG folds</font>, <font color="gray">UTG+1 folds</font>, <font color="gray">MP1 folds</font>, <font color="gray">MP2 folds</font>, <font color="gray">CO folds</font>, Button calls t50, <font color="gray">SB folds</font>, Hero checks

Flop: (t125) 6[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (2 players)
<font color="red">Hero bets t100</font>, <font color="red">Button raises to t200</font>, Hero calls t100

Turn: (t525) T[img]/images/graemlins/heart.gif[/img] (2 players)
Hero checks, <font color="red">Button bets t400</font>, <font color="red">Hero raises to t1210 (All-in)</font>, Button calls t810

River: (t2945) Q[img]/images/graemlins/heart.gif[/img] (2 players)

I would have raised pre but he was a station and I didn't want to build a pot OOP with 66. I feel I played it bad but don't know what I should have done different and would like advice. Thanks in advance.