Start as CNJ and do all the related class quest and main quest stuff up until I can join a GC (most likely the Adders). Probably pick up THM during my travels too. Actually, thinking about it, might just pick up every class as I travel cities just to have them unlocked. Anyways, do some side-leveling of THM when bored. Once in GC, get a chocobo. From there, work on main quest, dungeon running, annoying other Fat Chocobo members, etc...