Quite simple really, i cheated. Using RebEd, i set Luke force to 200, i also set his combat, espionage, and diplomacy to 200, on top of thatr iset his loyalty to max and his leadership. However, this wasn't enough for me. I then set the variability stats to max as well, apart from loyalty of course. Sometimes this results in a weaker Luke, but most of the time he'll end up starting with his stats over 1000, then with Dagobah, and the first couple of encounters with Vader his stats shoot up, i think Dagobah is a proportional increase thing. Then whenever you have a mission, send Luke on it. Not only do you get a good Luke, but when he starts to train Jedi, they tend to go straight from trainee to Master in one mission. If you do it long enough they catch up with him, then you get several uber Jedi Masters!!!