1b could be 'have a decently paid wife/husband/partner' - that approach is working for me, so far, tho I am still doing some freelance dev to keep things relativley fair
This works for me - barely. While the finances are fine, the stress level at home can get out of hand. Having a well-paid spouse who is willing to accept the uncertainty inherent in early-stage, pre-funding startups is MUCH more difficult to arrange than just the well-paid part.