Location, location, location. Ceres, that's where you want to set up. Just enough gravity so you probably can't jump off it, lots of ice, a fair bit closer than

Location, location, location. Ceres, that's where you want to set up. Just enough gravity so you probably can't jump off it, lots of ice, a fair bit closer than Ganymede with easier take offs, convenient halfway between Mars and all those Jovian moons. Open 24/7 and sell the hot dogs at cost.