AKo, biggish pot with all spade flop

[snazzy]

I've been lurking here for a while now trying to improve on my MTT play. Hope it's okay that my first post is starting a thread. I kind of think I messed this hand up, but I'm not sure.

It's a 25 man private tourney (10+1) on Stars, pays top 3. I play with this group pretty often, so we know each other's play somewhat. There are 23 left, I'm in second (first has 4k+) with a few others close behind.

Villian is 19/11/2 over 177 hands.

I don't always re-raise preflop here, but with a healthy stack I decided to try and build a healthy pot. Now that's it's big, I don't know if I should just fold or gamble (I've decided that my spade would probably be good???).


Poker Stars, $10 + $1 NL Hold'em Tournament, 25/50 Blinds, 8 Players
LeggoPoker.com - Hand History Converter

MP1: 1,475
MP2: 960
CO: 1,725
Hero (BTN): 2,350
SB: 2,100
BB: 1,405
UTG: 1,160
UTG+1: 1,295

Pre-Flop: (75) K[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/diamond.gif[/img] dealt to Hero (BTN)
2 folds, <font color="red">MP1 raises to 150</font>, 2 folds, <font color="red">Hero raises to 400</font>, 2 folds, MP1 calls 250

Flop: (875) J[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">MP1 bets 500</font>,