The easiest way to make an incubator is to get a styrofoam box and set it up just like the 10 gallon tank. Usually your local pet store has a few fish shipping boxes that they are willing to give away. I always give each pair of eggs their own deli cup of vermiculite, put holes in the side of the deli cups not the lids or condensation builds up, and then put the lids on, label them, and wait

You can transfer the babies as soon as they hatch, into sweaterboxes or tanks, on paper towel with a few hides and a shallow water dish. If you use the method of putting all the eggs together then be sure to mark the top of the eggs with felt pen, or the ones that hatch sooner may turn over the eggs killing the embryos in the other eggs.
Julie