PLo8 top set on flop with dangerous draws

[brian64]

Suppose you hold K[img]/images/graemlins/heart.gif[/img]K[img]/images/graemlins/heart.gif[/img]Q[img]/images/graemlins/diamond.gif[/img]Q[img]/images/graemlins/diamond.gif[/img] in MP. UTG limps, you limp, someone in LP limps, and the blinds call. Assume deep stacks, say 200 BB. 5 players see the flop:

4[img]/images/graemlins/club.gif[/img]5[img]/images/graemlins/club.gif[/img]K[img]/images/graemlins/spade.gif[/img]

Do you pot it? You want people to pay for their draws, but you are an underdog against someone holding A[img]/images/graemlins/club.gif[/img]2[img]/images/graemlins/club.gif[/img].

Case 1
Suppose you do pot, someone behind you calls and UTG calls. A scare card comes on the turn and UTG pots it. Which scare cards do you continue with? 3[img]/images/graemlins/club.gif[/img] seems an obvious fold, but what about 8[img]/images/graemlins/diamond.gif[/img], which costs you at least half the pot and makes a (fairly unlikely) straight possible?

Case 2
Now suppose the same flop, but this time when you raise the pot, someone behind you re-pots. In this case is it right to fold?