Raising fish in outdoor pond?

This spring I plan to start a aquaponic system in my backyard. Ive got a small 650 gallon pond and will set up grow beds so the water will be pumped through the plants in the beds which filter out the fish waste and then the water is pumped back into the fish pond clean again. I would also have a biofilter to clean the water more, a uv sterilizer to keep away algae, and a aerator to provide oxygen. So anyway, im thinking of having different types of fish including gr carp, bullhead catfish, bluegill, and channel catfish. Are these good choices or is their some other types I should consider? I have read in some places that channel catfish will not eat other fish and other places say they will? Would these 4 types of fish be able to live together if I provided them with plenty of food. Do you think I should also stock the pond with flathead minnows for the fish to eat.