You have a long way to go man. Those girls will take at least another year or two before they will breed. By then, you will probably have about 10+ females and need to build an incubator.
Here is a pretty cool incubator...
http://www.youtube.com/watch?feature...&v=6SdXvxnN8Xs
I have a very large deep freezer that I converted into an incubator. They are easy to build. Heat, fans, an enclosure that is sealed and insulated (an old fridge/freezer), thermometers and a thermostat is all you really need. They can be as large as a walk in room, or as small as a cooler for soda. Same concept.