Just as an aside, but I read somewhere that there is a glitch with the airspeeder on Nar Shadda. If you repair it and then do something with unlocking its controls, you can repeatedly do it to get xp (I think the post said 300xp). Could be a complete lie, I don't have a save game that I can go check with. But if you really want to see how far you can go, may be worth a shot "