Nothing is as important as passion. No matter what you want to do with your life, be passionate.
I've talked to some drummers who seem to have a very hard time staying in shape on the road, including some drummers touring with high-profile acts that don't have to live on fast food every night.
I believe that the profits will come from the quality of your creative products. Since the beginning, I've always wanted to develop a self-feeding circle of creative productions: the positive financial returns from one show would be used to develop and create a new show, and so on.