Nice exercise :)
Captain : Zoro
Fighter : Akainu (if allowed) or Kaido
Navigator : Nami
Sniper : Van Auger
Cook : Killer
Doctor : Law
Archeologist : Robin
Shipwright : Franky
Musician : Brook
Helmsman : Jimbei
Pet : Chopper who can also assist Law as a doctor
It is 11 but the pet is optional so it's fine.