5/10 river decision, set

[Percussion]

ok gentleman, heres a nice hand for me, I limp in EP (standard), I'm pretty sure the flop bet is standard, and I am also quite sure that the turn threebet is standard, beacuse Villian is a donk, but I don't think he was playing a 5-7.
Do I call down river? (I have seen villian limp with AA and KK)
Or do I raise it up hoping he has a hand like KTs or a lower set?

Oh, and who dosen't like my line?

PokerStars 5/10 Hold'em (10 handed) converter

Preflop: Hero is UTG with 8[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
Hero calls, <font color="#666666">4 folds</font>, MP3 calls, <font color="#666666">2 folds</font>, SB completes, BB checks.

Flop: (4 SB) T[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets</font>, MP3 calls, SB folds, BB folds.

Turn: (3 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, <font color="#CC3333">Hero 3-bets</font>, MP3 calls.

River: (9 BB) K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, Hero ?!