nl1000 set Jacks

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effective stacks 1200USD and i cc Jacks from the SB. BB calls too. UTG was the raiser and 1caller. so 4player total

flop comes Ts Jh 9h

i donk bet the flop for 100, UTG calls , UTG+1 made it to 300.

Whats the best line here and for the turn in a fullring game? UTG is very likely on TP or FD. would explain his flat call. When i call here he has good odds to call with the flush draw. On the other hand is the range from UTG+1 very small for a reraise(even if he is little too loose).

reraise 700? AI if have a decent equity against a made str8 und good one against a FD.