So, 10 million dollars after taxes, then?
I'd go to school, without a doubt. Education is one of the most important things ever.
If you think 10 million dollars will last you long - Have you ever heard the stories about people winning the lottery, then becoming homeless a year later? This happens in pretty much most cases of people going from rags to riches... They don't know the value of millions of dollars. Show them 20$? They know what that's worth. Show them 1 000 000? Not so much.
You'd be out of cash in less than a year, with no education and no job. Good luck in life.