Main question will be, who replace em?
But I would kick out Chopper, case he don't know how do to his job in emergency situation, unlike for example Nami, who even in deadly situation don't forget how do her job, and that part was always with her. So she is best, and Chopper is the worst
Also I guess, even being Sanji fan, I would say that he is bad cook case mostly he prepare food for girls with best ingredients, while once he prepared food from glass. I mean in food most important thing is not a taste. But I would just replace him on cook position, I mean he could play role of sub cook, but he is good fighter, also he could act independant causing diversions on other ships.
But for that I would need one more place, and...well it should be Brook or Jinbei. Brook is need for parties, so Jinbei should leave crew.