Space Teslas: where does the Big Rocket need to go?

Ultimately the Big Rocket needs a slight modification so that the habitat can deploy to the surface and the rocket refuel from atmospheric gas on mars before returning home. Once the reusable mars rocket becomes viable, colonization becomes viable.

Mars soil is described as unusable. It's tiny, sharp, and fragmentary. How do you use it? You add a biological grease to smooth out the edges. You can vibrate it into spherical particles over time.

A Mars Freehold is conceptually isolated from the central government innevitable with Spaceports.