3.40 QQ in small blind one limper

[Liquid_Quik]

This is the very beginning of the tournament. first 5 minutes, so i dont know anything about these players yet.
Im not sure if i played this well, or if i needed to check the flop, or bet more...
Poker Stars
No Limit Holdem Tournament
Blinds: t15/t30
9 players
Converter


Pre-flop: (9 players) Hero is SB with Q; Q;
4 folds, MP3 calls t30 (pot was t45), 2 folds, Hero raises to t150, BB folds, MP3 calls t120 (pot was t210).


Flop: K; K; 9; (t330, 2 players)
Hero bets t210, MP3 raises to t420, Hero folds.
Uncalled bets: t210 returned to MP3.


Results:
Final pot: t750