1-3 NLHE home game, villian is LAG and to my direct right. He's very moody with his play but tonight he seems happy/winning a little and not prone to spewing at this time. He can also get stuck to his absolute hand strength. I have a winning image, we are $500 effective. The game is 7-handed.
Villian raises UTG+1 to 9. I have J8cc and call as does small blind.
Flop Qd8h4c Pot $30. Villain c-bets $17, I call thinking I may have best hand enough of the time. Small blind folds.
Turn 7c bringing in back door flush draw, Pot $64. Villain bets $40, I now call thinking my hand is unlikely to be good but call for my 14 card draw.
River Qs, Pot $144. He checks, This check smells like 99,1010,KK,AA, so I decide to bluff bet $80. He calls with Q6cc.
Would you take this hand to showdown/think it is spewy to get him of his non-trip hands or is the bluff with the under-pair a valid play?