I got a C. Bright Circle (Bright Angel x Circle of Life) on Valentine's Day. She is climbing out of her pot, and i just noticed the beginnings of new growth, so it's repotting time! She was extremely pot-bound, to the point that some of the outer roots were smooshed flat. I put it in a 4" round pot (it was in a 4" square) but it still seems tight. I have a 5", but that looks too big. How pot-bound do catts like to be?