Party Poker 1/2 Hold'em (8 handed) FTR converter on zerodivide.cx

Preflop: Hero is CO with 4[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls, Hero calls, <font color="#CC3333">Button raises</font>, SB calls, <font color="#666666">1 fold</font>, MP2 calls, Hero calls.

Flop: (9 SB) 4[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, MP2 checks, Hero checks, <font color="#CC3333">Button bets</font>, SB folds, MP2 calls, Hero calls.

Turn: (6 BB) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
MP2 checks, Hero checks, <font color="#CC3333">Button bets</font>, MP2 calls, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">Button 3-bets</font>, MP2 folds, Hero calls.

River: (13 BB) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font> Hero?

The Button is about 18/10/2

I like the slowplay on the flop. I will entertain explanations of why this is bad. My thinking is that I am ahead of every hand except 1 at this point. More importantly, all hands are drawing almost dead. Also, I have excellent position because I am behind the preflop raiser. It's an automatic check I think. Once the player before me calls, I decide I will wait until the turn to make a move. I am positive the button likes his hand and will bet on the turn so I hope get at least 1 big bet out of the other player.

My big question is on the turn. Do you 4 bet this. I think the Button can sniff out the slowplay with the check raise, but he still 3 bets. Only 2 hands beat me, but he is a thinking player so I just call.

On the river do you bet/call, bet/raise, check/call?