Final table hand, live bar tourney

[popesc]

I'm at the final table of a bar freeroll tourney. Top 2 pay, about 50 entered, 4 people left at the final table.

Blinds are 100/200, I have 2700 in the BB, SB has 2300, UTG has 3500, Button has 700.

UTG is aggressive, but not crazy. Button is a little weak/tight. SB seems decent, I can't remember him showing down a hand, nor raising a lot, although we've only played about 10 hands at the final table.

Hero has J4o in BB.

Preflop:
UTG calls 200, Button folds, SB calls, Hero checks

Flop (600, 3 players): J 8 4 rainbow
SB bets 200, Hero raised to 400, UTG folds, SB calls

Turn (1400, 2 players: J 8 4 Q (complete rainbow)
SB bets 200, Hero...

Edit: Added hero's hand (I spend all this time trying to make a good post. BAH!!)