Here's my take on it.... CC are great table fare, and they're fun to catch. They're also cheap, and easy to get. I would be tempted to start with 12-15. Remember that CC will readily take to pelleted feed, and they will grow pretty quickly that way. In addition they can become very hook shy, especially if CPR is the order of the day. Once they get around 16" I would start harvesting, and see how many I tended to keep, or use.....remembering that C&R can lead to wary fish.
You can always stock more if you see yourself utilizing them more frequently.
