The stocking of fathead minnows will be a short lived, expensive escapade. The only real good use for fatheads is in the initial beginning, but they'll be gone in about two-three years. They are nothing more than a starter feeder or a snack. The best and most sufficient feeder fish is the bluegill. Stock these instead. As for the mudcats. Two words; fish fry. Invite a couple buddies over and run trotlines for a couple nights a week all through the summer. Team this with a growing bass population, and you can get rid of the cats. The best bait try chicken liver or dead minnows. Good luck.