stupid bet?

$1-$2 pacific, UTG has proved to be a tight solid player.

Hero is SB with A-Jo

UTG calls, 3 limpers, hero raises, BB folds, UTG reraises, all call.

Flop: K,Q,J rainbow

hero checks, UTG bets, limpers call (19SB's), hero calls

turn: 3. hero checks, UTG bets, all call (14BB's)
river: A. hero bets

Do you think it's worth a bluff attempt here to try get what looks like a set, or A-K 2 pair to fold? Or is this a check/fold every time?