25/50 deep PLO river decision

[donkey]

only see small-stake posts in PLO forums so posting it here (just move it if that's breakin rules)

25/50 PLO 5handed. BB seems tough/solid/etc. can be tricky, value-bets thin, blah blah. i havent gotten out of line and he prolly views me as solid. i have 11,000 he covers me.

folded to me in CO i raise to 175 with A[img]/images/graemlins/club.gif[/img]Q[img]/images/graemlins/club.gif[/img]8[img]/images/graemlins/spade.gif[/img]T[img]/images/graemlins/heart.gif[/img]. BB calls

Flop K[img]/images/graemlins/heart.gif[/img]2[img]/images/graemlins/club.gif[/img]7[img]/images/graemlins/spade.gif[/img]. BB check/calls 350.

Turn 9[img]/images/graemlins/club.gif[/img]. BB leads 1050, I call (ive seen him take the check/call dry flop, donk turn a few times but he hasnt shown down a hand yet)

River A[img]/images/graemlins/diamond.gif[/img]. BB leads 3150.

action?