Pretty much everything Shougun said.

If you want to get back in, I'd wait until the 28th. Then you can level Pugilist to 15, get on the airship to Limsa, and pick up the Rogue Job for the rest of the way.

Roetip: You cannot pick Rogue as a starting class. So if you want to hop onto the Ninja bandwagon, it's best to start off as Pugilist, since it is the Cross-Class requirement for Ninja.