Considering what area you live in, you will see a lot of turtles, lizards, and a few snakes here and there. At least, that is what I see most in the petfinder ads, a lot of turtles, torts and lizards. A really stand up thing your doing, and something I know a lot of animal lovers wish they had the space and money to do.
I agree, get the financial bit covered first, license, and then start taking in animals. I am really excited to see someone else out there trying to make a difference for how our herps are cared for.