a bet is better here. you have a decent shot at taking this down now, as has been said you will probably get the river free if you bet and are called, plus you only have 4 outs to improve. Not a huge loss if you are CRed off this draw.

if the pfr calls but UTG folds I would probably fire again on the turn. If it's reversed I would check behind the turn, expecting to see any number of strange hands that probably aren't folding.