My first MTT in a while... big hand

[outphase]

$5 + R/A

This is probably very results oriented of me for asking, but is pushing this flop ideal? The only reads I have are that CO likes to open limp drawing hands in LP and UTG+1 is very passive

PokerStars No-Limit Hold'em Tourney, Big Blind is t600 (9 handed) FTR converter on zerodivide.cx

SB (t24585)
BB (t14130)
UTG (t1844)
UTG+1 (t10375)
Hero (t14690)
MP2 (t57540)
MP3 (t12603)
CO (t45255)
Button (t8995)

Preflop: Hero is MP1 with K, K.
1 fold, UTG+1 calls t600, Hero raises to t1800, 2 folds, CO calls t1800, Button calls t1800, 2 folds, UTG+1 calls t1200.

Flop: (t7600) 9, J, 6 (4 players)
UTG+1 checks, Hero bets t12840 (All-In)...

[stuck]

It's probably not the best way to maximize profit. Put out a smaller bet