Another early SNG hand

[flytrap]

Party poker 50+5. I have JJ in the bb and 1250 in chips. Blinds are 15/30. 5 limpers, including the sb. I make is 150 to go, mp and co call. I have them both just barely covered. Pot is 500. Flop is T [img]/images/graemlins/diamond.gif[/img]2 [img]/images/graemlins/diamond.gif[/img]2 [img]/images/graemlins/spade.gif[/img]
I bet 350, MP raises to 700, CO calls. Push or fold? And should I have bet more or went all-in on the flop?