As much forage as you can afford and your body of water can support.
"good cat fishing" and "trophy bass" seem opposed to one another as they compete for the same forage. But if you have plenty of forage available, healthy water and structure and cover, you can probably do it. A mate of mine has about a 1 acre pond with LMB and CC and they coexist. The key to this pond is forage. Six days each week they are fed hundreds of forage fish.
Have you considered other species of cats as many have noted that CC become hook shy after being caught?
