ITM already, but I don't remember the exact number of people left, probably about 25 or so.

Do you flat or 4-bet/get it in here?

There was a big debate between two experienced poker players in my house and one wanted to flat in this spot and the other wanted to 4-bet/get it in.

Hero's is 16/13, so likely has a relatively tight image. My opponent was something like 36/24/1.0 over 8 hands with no 3-bets yet.

PokerStars No-Limit Hold'em, 55 Tournament, 1500/3000 Blinds 300 Ante (9 handed) - PokerStars Converter Tool from FlopTurnRiver.com

Hero (MP2) (t85928)
MP3 (t95970)
CO (t130796)
Button (t121178)
SB (t77322)
BB (t47227)
UTG (t116418)
UTG+1 (t29525)
MP1 (t49382)

Hero's M: 11.93

Preflop: Hero is MP2 with J, J
3 folds, Hero bets t6200, 2 folds, Button raises to t13750, 2 folds, Hero ??