I'm going to start breeding my own food for the snakes. It will be much cheaper and it will allow me to get a couple more snakes too. But I'm stuck on something. 2 of my snakes eat mice, and only one eats rats. Once I get things going I'm planning on buying a Carpet Python of some kind, and he or she will obviously eat rats. But I also want more colubrids. So both? Help me make a choice please!