Hi Vertexx,
Looks good, but need to hear a little about how the sadistic trait is going to play out as part of a crew - the book generally reserves the trait for bad guys, for example. I could see it working for a PC, but I'd like to hear what you have in mind, considering the benefit you get for a major trait that is entirely a matter of role playing, rather than of mechanics.
Smaller issue, perhaps a nonexistent one - if you take a major allergy to penicillin, expect illness to show up in the game more than I might otherwise have intended.
More Willpower might indeed be a good idea for influence checks