Question, is this pond private, and sealed from any other waterways? If not, it will be highly illegal to put the Bass and Cat's into it when they grow.
That said, you can keep Bass and Cichlids together for a little while, but the Bass is going to grow real big real fast. I would think within a year you would need a 200 gallon tank. Many people in the Native forum keep Bass, and they typically require big solitary and heavily planted tanks when they grow.
For cats, I would go with Bullheads over channels since the don't grow as big. I have 2 in a 75 for now, but they will need to moved shortly.