KK overpair on non-threatening flop vs 3 donkeys

[bfc]

Party Poker No-Limit Hold'em, $1 BB (10 handed) converter

MP1 ($162.50)
Hero ($82.20)
UTG ($76.17)
UTG+2 ($41.25)

Preflop: Hero is MP2 with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.50.
UTG calls $1, <font color="#666666">1 fold</font>, UTG+2 calls $1, MP1 calls $1, <font color="#CC3333">Hero raises to $5</font>, <font color="#666666">5 folds</font>, UTG calls $4, UTG+2 calls $4, MP1 calls $4.

Flop: ($21.50) Q[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
UTG checks, <font color="#CC3333">UTG+2 bets $10</font>, MP1 calls $10, Hero?

UTG and UTG+2 are complete donkeys (very loose and passive). MP2 is also a donkey but not quite as loose (VP$IP 30) as the other two. She likes to play any two paint cards and will call pot-size bets with KJs on Axx flops with only one of her suit.

The only other time I've seen UTG+2 show aggression was when I was holding KK and he bet $25 from the SB into a $12 pot with a rainbow ace-high flop (an instant fold and a bet saved).

I'd love to play this hand against any one of these opponents but not more than one. My preflop raise was too small here. If I'd made my standard raise of $6 or $7 here then maybe I wouldn't be in this pickle but that horse has already bolted.

I'll come back with the results.