Taking the time to up your education a bit decreases the downside risk of failure, forces you to learn a wider range of material than you (realistically) will teach yourself, and it doesn't hurt that brain cognitive development doesn't really end till 22-24 age range in most people. These all improve the payoff distribution of any decisions subsequently made.
As someone working on/in entrepreneurial tech myself:
1) the vast majority of interesting engineering challenges are within larger organizations (and thats awesome)
2) Nothing is worth sacrificing your health, nothing. Your health is the best predictor of how productive you can be intellectually. Any willingness to forgo health indicates a deep failure of understanding how to be productive
3) go to school and force yourself to take hard classes. The coolest tech opportunities lie in having DEEP understanding of topics. There are amazing engineers out there who never finished college and they're great people, but they all really regret not having finished their undergraduate. Every single one of them, if they could got back in time, would force themselves to finish undergraduate degrees
4) dropping out is ok come graduate school though :)