Often, people program one bank with local police/fire, one for state and or county, another for seasonal frequencies such as Forest Rangers, Fish and Game, and possibly one for DPW(normally, DPW is more interesting in the winter. The whole point of any organization of banks is so that you can turn them on/off when you want to concentrate on a particular area, emergency, or maybe you are a fireman mostly interested in fire. What you have done is fine until you find you want to organize it differently.