NL 10 6max: KK getting much action preflop, deep stacks

[Heffer]

MP3 is running 50/8/4 over 63 hands

Everest Poker No-Limit Hold'em, $0.05/$0.10 (HH Converter by Kreatief)

MP3 ($25.71)
CO ($1.50)
Button ($16.52)
SB ($2.09)
BB ($4.81)
MP2 ($27.20) (Hero)

Preflop: Hero is MP2 with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img]
<font color="#CC3333">MP3 raises to $0.35</font>, <font color="#CC3333">CO raises All-In $1.50</font>, Button calls $1.50, <font color="#666666">1 folds</font>, <font color="#CC3333">Hero raises to $8.10</font>, <font color="#CC3333">MP3 raises All-In $25.71</font>,

what's the right thing to do?