[DrModern]

Fold preflop, though it's not an awful limp. The flop bet is good for equity, and will cost less than checking it behind and calling a turn bet (provided you don't hit on the turn), which is reasonably likely to occur after the flop checks through. I'd check the turn behind. I don't think your equity is good enough even with the added two-pair and trips outs to bet.

Edit: Also, I don't think you can rely on people folding enough to semi-bluff the turn after they peel this flop.