The fight isn't terribly difficult
A solid party of level 60's should be sufficient enough to win this fight
He is surely doable by duo/trio of lvl 75's
Just take note that he spams his strategems like a pro to get his spells off quicker. He used Tabula Rasa when he was 40% in our fight and spammed Manifestation + Nukes which isn't terribly powerful but could be a pain in the butt. He also uses a dagger so his attacks are pretty fast, and as far as his evasion goes, he wasn't hard to hit even without food (I was 75NIN during the fight fyi)
Have fun with the fight and congratulationis on your Scholar's Mortarboard :D
My party setup
75NIN (me)
75SMN
70RDM
75THF
75MNK
61BLM
We totally annihilated him >_>; I know it's a bit overkill but I didn't want to lose