Shawn - Be sure that you really need or want CC before you stock them. If you don't plan on eating them on a regular basis consider leaving them out of the pond. They do not "clean the bottom" and if you feed your fish they can become a nusiance or novelity depending on how you preceive them. There has been lots of discussion here about pros and cons of CC in smaller ponds. Fish are real easty to put into a pond but they can be very difficult to get all or most of them out if you decide you do not want them.

aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management