Standard raise here on 556 flop with JJ?

[Unarmed]

Well besides the misclick t50 underbet, this look ok? (no reads)

$5 PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (8 handed)

UTG (t1225)
UTG+1 (t580)
MP1 (t1235)
MP2 (t995)
Hero (t1665)
Button (t6005)
SB (t860)
BB (t935)

Preflop: Hero is CO with J/images/graemlins/diamond.gif, J/images/graemlins/spade.gif.
<font color="CC3333">UTG raises to t90</font>, UTG+1 calls t90, MP1 calls t90, MP2 folds, Hero calls t90, Button calls t90, SB calls t75, BB folds.

Flop: (t570) 5/images/graemlins/diamond.gif, 5/images/graemlins/club.gif, 6/images/graemlins/diamond.gif <font color="blue">(6 players)</font>
<font color="CC3333">SB bets t150</font>, UTG folds, UTG+1 folds, MP1 folds, <font color="CC3333">Hero raises to t720</font>, Button folds, <font color="CC3333">SB raises to t770</font>, Hero calls t50.

Turn: (t2110) J/images/graemlins/club.gif <font color="blue">(2 players)</font>

River: (t2110) 9/images/graemlins/spade.gif <font color="blue">(2 players)</font>

Final Pot: t2110

[captZEEbo1]

It should be fine for a $5 tournament, because most people at that level would slowplay the trips is my guess. Only real concern is flush draw, which you want off. Other concern is that someone behind you has hit the trips. With this many people seeing the flop it is potential concern that someone called the raise with A5 or something lame. Doubt anyone has QQ+, b/c I'd assume that people would most likely reraise you pf with those hands, but I'm not totally sure. I'd say with his size bet, you pretty much have to go allin.