Well, it's a good thing you have a good business understanding and capable of making double profits that would make you a millionaire in 5 years time like you said, but I've read everyone's reply and I've seen that the choice depends on the invidual, and the society they find themselves in. Everyone have their different opinions about the topic and while some would rather take the 5BTC and establish themselves with it, there are others that would prefer studying hard to get good grades and secure a good paying job or learn and improve their skills with the level of education they've attained and still make same 5BTC, in a long or short interval.
  Like I said earlier it all depends on the individual, there's a tendency that one could get the 5BTC and not utilize the money properly, they may lavish it on luxury lifestyle or lack business ideas like you do to double the 5BTC. Also there's a possibility that one could get could grades after school and lack the opportunity to secure a good paying job, vise versa.