The first thing I would suggest is to visit other centers in your area and observe their set up, how full or not they are, amenities offered. Your own experience working within a center is the best you could possibly bring to your own business, as well. Armed with this information, you would need to contact your state family services department to find out what licences are required to own a child care center. In most cases, you will also need a center director or become a licenced director yourself, depending on what your long term goals are.
In my experience, it would be more profitable being the owner and director if you open one center. However, if you plan to open several locations, just being the owner and focusing on the business side is best.