Keep all the Bream, shad and minnows that you can, and add a mixture of blues and channels. With supplemental feeding, you feed the bream, shad and the cats. With the bream and shad feeding on the food, they can become extra forage for the cats. Keeping a few bass would not hurt either, but the supplemental feeding, I agree is needed on a pond that small. Stock channels at about 2 to 1 over the blues in other words, around 125 channels and 75 blues. Can't see a problem with this..