Since you're directly asking for advice: no. Finish school as planned (earlier? awesome). There will be plenty of opportunities ahead. Don't set yourself on a path of failure because startups are very risky, these guys have no experience funding them and it seems like you're a technical guy having lots of fun (but are you an entrepreneur at heart?). Think about the odds of "startup being a success, in your perspective" vs "startup failing and I still haven't finished my studies". Just my 2 cents.