Fold or Push

[Macedon]

I'm new to the sit and gos, so i would appreciate any opinions on how i played this hand.

Considering the blinds (250/500) and my chip stack (1110 after posting), was my play decent? With an open ended straight draw and backdoor flush draw, plus some folding equity, i felt like it was the place to make my stand.
Was my thinking flawed???

***** Hand History for Game 3266963584 *****
500/1000 Tourney Texas Hold'em Game Table (NL) (Tournament 18630334) - Mon Dec 26 23:18:14 EST 2005
Table Table 66825 (Real Money) -- Seat 3 is the button
Total number of players : 3
Seat 2: Macemacd (1610)
Seat 3: crawf24 (3520)
Seat 6: papat123 (2870)
papat123 posts small blind (250)
Macemacd posts big blind (500)

** Dealing down cards **
Dealt to Macemacd [ Tc, 6h ]
crawf24 calls (500)
papat123 folds.
Macemacd checks.

** Dealing Flop ** : [ Jc, Qc, Ks ]
Macemacd checks.
crawf24 bets (1000)
Macemacd raises (1110) to 1110
Macemacd is all-In.
crawf24 calls (110)

** Dealing Turn ** : [ 7h ]
** Dealing River ** : [ 5s ]
Creating Main Pot with $3470 with Macemacd

** Summary **
Main Pot: 3470 |
Board: [ Jc Qc Ks 7h 5s ]

Macemacd balance 0, lost 1610 [ Tc 6h ] [ high card king -- Ks,Qc,Jc,Tc,7h ]
crawf24 balance 5380, bet 1610, collected 3470, net +1860 [ Jh Qd ] [ two pairs, queens and jacks -- Ks,Qd,Qc,Jh,Jc ]
papat123 balance 2620, lost 250 (folded)