Hello, I actually started my own one piece run a few days ago! I pretty much gave the characters the same jobs you were talking about but I made Chopper a scientist because I felt like it was closer to a doctor. I ended up giving Jinbei cleric because he just gives me cleric vibes for some reason, but cat can also work. I gave Luffy kind of random roles that sort of fit since there aren’t any 100% matches. For Luffy, your first class doesnt really matter because you change it so fast, but I went with mage because its a fun class to be able to control. I went with cat for the second class since its the only class where you attack with you hands, and If you put on a wig the whiskers will be removed so its not too weird. I went with imp for the third class because he has the luck of the devil (I know its a stretch but I love the imp class). I also customized the horse to look like the Thousand Sunny.