We get into orbit with an assist from the magnetic launch rail. Then we're off to the orbital spider to fill up on reaction mass and get a boost towards the Pournelle/Niven transfer station. Along the way, we'll use the contents of several in flight tanks to refill our reaction mass.
[!1.2]TANKS: Launched earlier
That's more outside help than I was expecting.
It's like owning a truck. You can go from coast to coast on your own. It's a lot easier if you use the roads and filling stations.