Courses on Small Business Management?

I'm investigating if there is a need for Small Business Management course specifically aimed at tradespeople? (electricians etc) We're a training company that focusses on engineering/technical courses and we've been investigating the potential design of an accredited diploma of management specifically aimed at tradespeople looking to start their own businesses. I won't name the company as I'm not looking to advertise here at all, I simply want to hear from people in this situation wether a formal course which is nationally accredited in Australia would be useful? We're thinking of including items such as creating business plans, basic marketing, managing finances, managing tax etc. Any feedback would be much appreciated!:)