Nothing wrong with the ambition but running a shop is much different than working and wrenching at one. You should go to the local community college and ask about business classes. You need some accounting, some business, some marketing and things like that. Because you can't collect the money if you don't bill and bill correctly, and if you don't collect the money and are doing it for free, it is just a hobby. And you have to get the people to bring their problems to you. Being a problem solver is what you do and if you can't solve peoples problems they wont be coming back.
We have all seen the greatest mechanics, trades people and others go under and it has nothing to do with their wrenching/working ability. Working at your business and work on your business are two very different activities.
