My only tip would be to pick up gladiator for a few levels once you reach Ul'Dah.
Flash is a great substitute for Overpower when you're level synced below Overpowers level. And you'll get Provoke as well, needed at higher levels, or if something just gets lost in the fray.

Other than that, nothing much else save for a few FATEs will actually sync you below Overpower again, even the first dungeon lets you keep that. So you shouldn't have much issue carrying forward! Let that axe become an extension of your body and feel the beast within!

Welcome to Eorzea.