Hi tommohawk,
Another feature you may find useful later on using RB is the ability to generate tracks there without having to go back to BIAB. You can generate new additional realtracks for however many tracks/bars you choose. You can also generate additional midi tracks from the same or a new style. Realband is really easy to use. I would encourage you to go from BIAB to Realband then back to Mixcraft if you wish as that will give you a good foundation when you're ready to do more advanced stuff within the programs. Just my two cents.