Occasionally, when I'm really hating my job I've considered the idea of contracting out my services to create ebooks for self-published authors or author's with a backlist. You've just listed about five things I hadn't even taken into consideration.

Main reason I haven't quit my day job is that I still have to pay for school and the marketing aspect of starting my own business has me a bit stumped. That and a tiny lack of faith in my own skills.

I think I'm going to print out this list. The actual creating the ebooks part seems like the easiest section of it. Though, I know if there are footnotes, that'll be a bitch to code.