No he wont look young, I'm keeping my head on it for the hair effect but the with the face skin I will make him look a bit older, the thread name is a little unappropriate now. I guess it should be called "Matt's Original Trilogy Luke Pack" or something.
Updates:
Ok working under the assumption I can make luke like Jaden and use different model parts for different looking Lukes I have eliminated the problem with the Bespin skirt, as good as a job Hap did with the skin on the Jedi model, it never really screamed Lukes face to me, now my version of Luke you will be able to switch between skirt for Tatooin and ROTJ and no skirt for besbin, and Endor and otehr skins, it give it alot better skinability for new skins too.