Battling heads up in the blinds vs good player

[SGS]

I was playing in a good party 6-max 10/20 game. Two players were basically donating their stacks to the game. There was, however, one player that was a solid, good player, which is who I played this hand against. I pick up A,Ko in the SB. It is then folded to me and I raise. The BB, which is the good player 3-bets it and I call.

Flop- K,8,4 (rainbow)

I check he bets and I call, planning to raise the turn.

Turn-6 (completing the rainbow)

I check and he checks behind. Well that didn't go as planned.

River- 10 (Final Board K,10,8,6,4)

I bet out, and he raises. What is your action now? Call, fold, or raise???? Comments on any other street are apprecited too. Thanks in advance.

SGS