Would you consider laying this down?

[feelixthegreek]

You are UTG+2 in a 9 handed live 1/2 NL game which up until now has been very calm.

One limper to you. You are dealt KhKs. You raise to 15, get three callers behind you plus the UTG limper.

Roughly $75 in pot. Effective stacks are $350.

Flop is KdJdTs. UTG checks. You lead for $40. Next player pops it to $140. Two folds back to UTG, who pushes.

You???