$12+1 6-handed - JJ first hand

[housenuts]

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (6 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

Hero (t1500)
SB (t1500)
BB (t1500)
UTG (t1500)
MP (t1500)
CO (t1500)

Preflop: Hero is Button with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls t20, <font color="#CC3333">MP raises to t60</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t200</font>, <font color="#666666">1 fold</font>, BB calls t180, UTG folds, MP calls t140.

Flop: (t630) 3[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP checks, <font color="#CC3333">Hero bets t1300 (All-In)</font>

First hand. Is this standard or should I be making a smaller bet on the flop? I had to bet, and figured anything else reasonable would almost commit me.