Sounds like you're doing your homework. From Bobbilinks: "check out Linda Taylor, professional machine quilter and teacher, on the web". I had a book and I think this might be the author. It was very good with what to expect, how to price, advertising, forms, etc. The best advise I found was to determine how much time and investment you plan to make, I think this is part of a business plan. If you enjoy quilting as a hobby, this step will make it a business.
Think about your skills and appitude. If you determine this is what you want....Go For It. You'll meet some great people.