I will need to explain some of my reasoning in this hand, but welcome comments on any area of my play. I should also say that I posted a hand here recently where I folded JJ pre and consensus was that I should have called, which I agree with.

$8.80 12K on stars

Poker Stars $8.00+$0.80 No Limit Hold'em Tournament – t75/t150 Blinds + t20 – 9 players
TournamentPokerEdge.com Hand History Converter

gamblr84 (BB): BB = 22.3, t3348
Csofter (UTG): BB = 58.9, t8840
Indiana 2011 (UTG+1): BB = 104.1, t15612
Hero (UTG+2): BB = 53.7, t8050
Chester20o (MP1): BB = 32.3, t4840
Magyarh (MP2): BB = 30.2, t4530
dzjeszt (CO): BB = 10.1, t1520
Killees (BTN): BB = 65.3, t9789
kmsmihail (SB): BB = 22.4, t3355

Pre Flop: (t405) Hero is UTG+2 with Q Q
1 fold, Indiana 2011 raises to t321, Hero calls t321, 6 folds

Flop: (t1047) 8 5 3 (2 players)
Indiana 2011 bets t680, Hero raises to t1500, Indiana 2011 raises to t2320 Hero ??

I don't have many solid reads at the table as I was only moved to it recently but Indiana was 18/13 for about 30 hands. There were a few shorter stacks at the table and so when Indiana raised I flatted pre hoping to induce a squeeze. No-one went for it though so we were heads up to the flop.

Having under-represented my hand pre-flop I was happy to get it in here so I 3bet and was going to call a 4bet shove. But he min 4bet me which set off alarm bells and to me looked like a monster. So this is where I am unsure with my thinking because I basically then put him on KK, AA or a set. I thought that with A8, 99 10 10 type hands he would either flat or make a bigger raise. A flush draw would be too, and even a bluff would surely make a bigger bet here. I know that if I flat then I will have to call the turn and river so to play on it will be for all my chips.

So is this an easy decision to get it all in? Am I being way too nitty by folding? Also is flatting as a trap pre a bad idea here?