I would add to that that if your startup pays enough for you to live your lifestyle in the area you choose, then it's okay to leave money on the table so to speak.

You can always go retire at a big company later. The younger you are, the easier it is to take these sorts of risks.

But also think like an investor. Don't put your $x00,000 investment in a startup just because it's cool. Do it because you believe you'll make a positive ROI.