In my experience just setup your stepped hull as you would a normal mono hull,the main difference is the extra lift a stepped hull creates but in my experience it isn't much on such small hulls.The main drawback of a stepped hull is turns can be quite tricky but then again that depends on the boat.Also many so called stepped hulls are not really stepped hulls as the steps or not really steps lol.As I said turn fins should be parallel to the bottom not the keel line or when you lean into a turn the fin will act like a planning surface causing the transom to lift and the boat to spin out,its common sense just think about it.
Mart