JTo 100-200 river bluff raise

[mike l.]

here's another one. i have JTo on the button. a mediocre player limps mp, i flat call, sb calls, bb who is random/bad/clueless (reason i limped in preflop in the first place fwiw) raises, mp and i call, sb calls. 4 of us.

the flop is K75 rainbow. sb checks, bb bets, and when he does he's looking not so discreetly out of the corner of his eye at me. i take this as genuine nervousness about my presence in the hand and go ahead and raise when the mp folds. sb folds, bb thinks and calls.

the turn is a 9 giving me a double gutter. he checks, i bet and to my surprise he calls.

the river is a 7. he thinks and awkwardly donk bets, i raise.

did i get this one right and take it down? or am i just wasting everyone's time posting yet another losing hand i think i played well?