Crazy Monkey, It's all been worked out. Check out the Dredan Campaign Setting for Pathfinder. We have played Spelljammer, Traveller (T20) and now Pathfinder. Dredan is a straight up mix of Technology and Magic. I have worked out the skills, feats, new races, classes, the whole setting is spelled out. It is a full blown campaign setting with over 75 planets, 25 systems all described. The PDF is available for download. Check it out and if you have any questions hit our website and email me directly. Dredan Realm of Metal & Myth has been in the works for over 6 years and I just converted it to Pathfinder rules complete with new Sorcerer bloodlines, Deities and Domains. Email me anytime I am happy to help with any questions or rules clarification because we exclusively play Spelljammer/Traveller/Pathfinder all in one.