AKo stick around?

Party Poker 2/4 Hold'em (10 handed) FTR converter on zerodivide.cx

MP1 has been raising/3 betting nearly every hand since he sat down. Claiming he makes 100k a year playing cards and showing off with 1500$ at the table. No read on mp2.


Preflop: Hero is SB with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">MP1 raises</font>, MP2 calls, MP3 calls, <font color="#666666">1 fold</font>, Button calls, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">MP1 caps</font>, MP2 calls, MP3 calls, Button calls, Hero calls.

Flop: (21 SB) 5[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, <font color="#CC3333">MP1 bets</font>, <font color="#CC3333">MP2 raises</font>, MP3 calls, Button folds, Hero folds, MP1 calls.

I didn't put a lot of thought into this fold and forgot to look at the size of the pot. Should I have called 2 bets for my overs, or fold assuming someone hit trips?