Impressive work!
Been a while since I’ve last seen someone join a modding scene with an actual professional background in what they aim to do. ^^
General advice would simply be to not join too small projects. Probably doesn’t sound all too nice in terms of adivce but it saves you a lot of frustration / demotivation when those projects (as it sadly often happens) go down the drain. Especially with the currently small player base of Freelancer that’s an increasing problem.
Aside from that, as I understand, there is a general lack of hitbox creators around and even if that’s most likely not the most interesting thing to do it would be a starting point to look into some tutorials regarding the matter (or really tutorials about FL modding in general).
EDIT: I just saw that you’ve worked with the UDK and Unity. Can you tell us a little more about it and how each would be suited to create a Freelancer Clone in particular? There’s been a topic about the matter here: http://the-starport.net/freelancer/forum/viewtopic.php?topic_id=3779&forum=6