AKo- Two pair and agression

[Firefly]

Party Poker 0.5/1 Hold'em (9 handed) converter

Preflop: Hero is UTG with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, MP1 calls, MP2 calls, MP3 calls, <font color="#666666">4 folds</font>.

Flop: (9.50 SB) 8[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, MP1 calls, <font color="#CC3333">MP2 raises</font>, MP3 calls, <font color="#CC3333">Hero 3-bets</font>, MP1 calls, <font color="#CC3333">MP2 caps</font>, MP3 calls, Hero calls, MP1 calls.

Turn: (12.75 BB) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero...?

Relevant reads: I had really been running over the table (lots of good cards, though I haven't shown many of them down)
Players in general were probally about 40-50 ish vpip and pretty standard post-flop.
My thoughts on the hand, pf is standard. It's a darned good flop for me but capped 4 ways on the flop, i'm not sure if i should go into check/call mode or fire again on the turn. My thoughts are skewed because of the results, but i just wonder what the correct play is.