Playing KK vs. a limp-reraiser

[five4suited]

Looking at the pf action, and assuming your assessment of the skill level is correct, I've got to think that mp1 has A5 or A7 suited, or perhaps TT, JJ, QQ or AA. I could see ace-suited getting in for 3 pf (personal prejudice), or maybe he was going to be the limp reraiser but the maniac beat him to it, lol. Anyway, you beat 3 of those 5 hands. I could see the avg. player betting the turn with an overpair or "putting you on AK" and betting A7, but not three-betting in fear of trip 5s, a bigger overpair or a flush draw. The river raise to me means overpair or trip 5s.

Since you only beat 3 of the 5 hands chk/caliing the river is the way to go, no? 2x you'll lose 2 bets and 3x you'll win 1 bet if you bet out, so your ev is slightly negative.