Unlock Clan Centurio Hunts from the Hunt Board outside the Forgotten Knight tavern in Ishgard Foundation and do all three tiers of Hunts each day along with the weekly Rank B Hunt (which a level 60 player should easily be able to solo with their chocobo). These will reward Centurio Seals which you can turn in with Yolaine, the elderly elezen lady behind the counter at the Forgotten Knight for antiquated AF2 gear (the old Tomes of Esoterics gear) for your Job which is ilevel 200 (you can also upgrade this gear to full AF2 which is ilevel 210).

After a few hunts you should be able to acquire enough seals to gain the whole set which would be enough to get you past your current roadblock. Good luck!