A (paid-off) house. The (right) woman and in-laws. A stable job with good pay (which I don't have and most likely won't have anyways). Family support. Financial buffers.
  1. not necessary, it might even feel like taking away the freedom to choose together, like where to live.
  2. why do you need to care about the in-laws - you're marrying her not her family?
  3. not necessary, nothing is stable or should be.
  4. better to be independent, otherwise you would need to listen to your family.
  5. why? all you need is Bitcoin, stay away from banks.
and all I can say is stay healthy, keep stacking skills and sats, and be yourself - the right one will come one day when you are the least expected.