[atnels]

I agree - bet out, reraise if MP1 raises. The limp/reraise is suspicious, but even if MP1 caps behind you on the flop I would still lead into the turn. If MP1 raises your turn bet, then you start thinking about calling down unimproved - especially since limp/reraise sometimes stinks of AA.

If you have any kind of a read on CO as being respectable, you might be able to put him on something when he calls your initial flop bet (if you lead out). An intellegent player has to realize that with the flop action it will likely be raised behind him and be okay with calling bets back - indicating he has at least some piece of the flop.

Disclaimer: I realize that we all know and love the players who will just call regardless, that's why I said having a read on him as being at least decent would help you here.