are you able to trade 2 of them for 1 top shelf guy before the keeper deadline? if not I think you have to part ways with CC, he was magical last year but he was also beating on the NL for half the year, Santana has got a better bully this year so he should be the player we all expected him to be last year.
Check out my "Keeper Consolidation Help" thread on the first page, and help out if you can.
With solid bullpen for Mets (only thing that kept him from being 20+ game winner)I think Johan and Reyes are the ones to keep now. I think Johan has such a great approach to pitching and an easy motion that keeps him safe for years... CC is great too but I'm more concerned about his IP year after year and especially after Brewers leaned heavily on him in 2nd half. I'd also look to deal Johan for another A1 offensive keeper if you are looking for youth. Probably wouldn't keep any other younger aces in a 2 keeper league unless it was Lincecum... maybe. Should be plenty of excellent pitcher options to choose from given only 2 keepers per team, but given you pick 7th I'd probably lean towards keeping Johan and go offense with that pick instead.