QQ in BB, 2 limps, 50BB stacks

[Tankado]

About 1 hour in MTT. Effective stacks are 50BB.

MP+2 limps, SB completes. Hero in BB with QQ.
Whats the best line (against normal/good thinking opponents) to extrakt the most money yet not to stack off to a mine setter?
Checking feels very weak. If we both flop sets, all the money goes in the middle obviously, otherwise I won't get much on later streets.
Big pf-raise kind of telegraphes my hand. With overcards to my queens I'm not commited, but a 2/3 c-bet on flop will often win the pot for me (if my opponent does have an unimproved little pp).
I get a little lost if I raise pf (what amount?) and flop an overpair. Too often I stack off to a set. Help?