Nick,
I don't know you, but have read alot about you. If your mechanical skills are what they are, take your grandfathers advise and learn the trade startin with a broom. That's no joke either, I started on a cut-off saw after 2 years of vocational HS machine trades training. Not to redirect a thread, but get the basic 2 year business degree and then learn how to remove a snap ring ... ... ... ... after that, you can learn how to make one ... ... ... ... . after that, you can learn how to sell one.
Seems you have plenty of time since your grandfather is still around, and your father and uncles are still involved.
Sorry if this offended anyone, including you Nick. I own a small machine shop that I built with no business degree ... ... ... . ask your grandfather about how that happens and listen to what he tells you!
-Jeff