Ted, I am anything but an expert yet I'll throw in my two cents worth. I would be very careful with the channel cats. In my pond the previous owner stocked CC, hybrid bluegills and LMB. He never harvested but fed (the CC) continuously. I now have a 2 1/2 acre pond swarming with monster cats that are hook shy and ravinous for the fry of any other species. I have seen them chase small green sunfish out of the water. There are numerous threads regarding pond owners' attempts to eliminate or reduce their over population of cats. I would wait until the other species are abundant, or at least go with fewer numbers of smaller cats.