Great setting to use the SR ruleset in. Got a player working on doing the same thing, except using "Cowboy Bebop" as setting. Pilot Aeronautics already has space craft covered, though you might want a Pilot Spacecraft for Capital grade ships, and leave Pilot Aero for fighters/merchies (since they enter atmosphere). Free-fall is already a skill, though I can see Spacemanship (Space Traveler?) as a skill. Don't forget Navigation, under Logic, as you don't get where you're going in space without navigating very well. Also, look up teh Evo spacesuit in R&G for ideas that way. As for travel mechanics, I would use the Battletech concept (dropship/fighters go from planet to jump point, hitch onto jumpship, jumpship then jumps to new system, dropship/fighters detach and go to planet, rinse, repeat).