Rivered top two with 4 to a straight out

[Bond18]

Full tilt 75 18k guarantee. Blinds 25/50, i hold KQo in the BB and theres 5 limpers with an SB complete. The villian in this hand is CO woh starts the hand with a stack of 1380, mine is 5500.

Preflop: 5 limps, SB completes, i check in the BB.

Flop: Q J 9 rainbow (pot 300)
SB checks, i bet 200, folds to CO, CO calls, button folds, SB folds.

Turn: 6 (pot 700)
I bet 350, CO calls

River: K (pot 1400)
I check, villian goes all in for 780.


Yuck. A few things. Hows my turn bet? I was planning on folding to a shove by him but he didn't make it that easy. Play in this tournament is pretty loose/weak especially early. Theres a bunch of crap he could have on this river but seems like he would check all that. I'm getting just under 2 to 1 on this call, your play?