Best way to level up from 57-70 imo. It took some time to get your squadrons to that level of destruction but it’s worhty. All Party members are on full offensive mode and the attributes are well combined. With Rest and Food Buff and the squadron battle manual you get over 1.400.000 exp points per run (if it’s not your first job you’re leveling) With other Buffs (World Buff and armory) you can still get much more exp. With White Mage it is getting faster for me but every Job is fine when your Squadrons are on that level.
https://store.playstation.com/#!/tid=CUSA00285_00
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