25NL 6M Flopped set with interesting turn/river

[toybux]

First of all, I'm not really looking for preflop comments. I raise here sometimes, I limp here sometimes, and the table dynamics were such that I decided to limp rather than open.

Villian and I had some history. He's called a lot of my flop c-bets and bet the turn when checked to. We haven't gotten involved like this in a limped pot yet, so the dynamic is somewhat different. Villian is 46/5 preflop, but more active postflop. I feel like his turn raise is almost always a hand and almost never a bluff. I haven't been multi-barrelling much, so he probably gives me some credit for some sort of hand. His AF is 1.6. I also give him credit for playing postflop better than an average donk, but still not amazingly.

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($45.47)
CO ($4.08)
Button ($19.81)
SB ($1.04)
BB ($13.10)
Hero ($35.35)

Preflop: Hero is UTG with 6[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.10.
Hero calls $0.25, MP calls $0.25, <font color="#666666">3 folds</font>, BB checks.

Flop: ($0.85) 6[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $0.85</font>, MP calls $0.85, BB folds.

Turn: ($2.55) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $2.25</font>, <font color="#CC3333">MP raises to $5.77</font>, <font color="#CC3333">Hero raises to $12</font>, MP calls $6.23.

River: ($26.55) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero...?

1) What do you think of my turn play? I feel like I could have raised a bit more here on the turn. Also, if villian pushes over my raise, what do you do?

2) This is a interesting river card. I could have just sucked out on a straight or am ahead of the flush that just got there, or I could now be behind to a bigger boat. FWIW, I feel like villian will almost always bet here if checked to unless he held QJ (but he will bet the straight/flush/boat if he's got it). I have about $22 behind. What is your river line?