Well, let's see. Dani may be a Melee, but she strictly uses punches with a few kicks, so a kickboxer is available. We still need (I believe) a cook, an entertainer of some kind (doesn't have to be a musician), a navigator, a first mate, a shipwright, a helmsman, a gunner, and I think that's it.

(Oh, I don't really classify swordsman as a position, but more of a fighting style. I would call Zoro more like the first mate. But, I'm not GM, so I default to Sable on that one.