If #4 is expanded to "Be charismatic and social", that would cover #6 and #7. I think #5 and #8 are part of #3, being in the right geographic location is definitely part of being the prevailing tribe, and so is having up-to-date tech skills.

Come to think of it, #2, being easy to work with, can be subsumed into being charismatic and social without much loss.