[arijon]

Do it! But only if you believe in what you are building. Actually, do it even for the sake of trying :) If you manage your money right >75k is plenty. You are at the best age to take risk, it will only get harder as you get older. Also, I think you are asking the wrong questions, you can't start off with an "if I fail" mentality, be optimistic. Are you European? :) haha jk

The journey is ...Fun, challenging, stressful, extremely stressful, rewarding, requires huge sacrifices, unfair, vicious, a great learning experience, mostly filled with lows but the highs are totally worth it.

I don't know if I have answered your questions but the best way to find answers is to try, you really have nothing to lose but a whole lot to gain. Godspeed!!!