With the amount of FATE running for Atmas, there's also a good chance that you can go into an area that has FATEs 7+ levels above yours and score some decent experience. If you have a tank class, you can do all but one dungeon run as a tank, then do the last run as your DPS to fulfil the challenge log requirement if you're not keen on que'ing for that many runs as a DPS. I think there's another challenge log that gives a chunk of experience for killing "X" amount of mobs with your Choco companion. And always eat food for the 3% boost. Cheap eggs or what have you. If you also have one other person to pair up with, doing leve's that are 5 levels above you at middle difficulty is possible, especially if one or both of you have your chco out. They give more experience than.