Help from those who have played the game and some spoilers.

Ok, I'm at the end of the game (Before Bahamut).
But, 'traditions of doing Sidequest before final dungeon'. Well, you know.

[SPOILERS]My Party Level is 65.
Should I.......
Espers: Successfully obtain 11 Espers. Should I go beat Ultima then Zodiac?
Mobs Hunt: Rank E to Rank A finished. Bar Mobs Hunt of Rank S finished. Rank H: Fafnir, Doomgaze and Diabolos defeated. Clan Mobs Hunt Rank H: Gilgamesh and Carrot defeated.
I need to defeat these:
Rank S: Ixion and God. Rank H: Behemoth King and Pileraster. Well, should I punch them? I'm too scared to go back to Pharos at Ridorana Subterra. Where's Pileraster, btw?
Levelling: Is my level too low?
License Board: Upper Version (Magic, Skill, Accessories, HP Plus, Battle Lore, Potion restores more HP, reduce time and MP cost, Remedy heals Doom and all of that obtained) successfully activated. Only armor and weapon (Lower version) nodes need to be activated. Should I go activate them?
Secret: Go find secret weapon/armor/accessory/item/magic.
Shops: Buy everything needed. Where can I buy Far Attack and Collapse? That's the only magic/skill that I haven't buy yet.
Secret Places: Westersand, Zertinan, Nabudis, Nabreus, Cerobi Steppe explored. Need to be done: Pharos at Ridorana - Subterra. Finished Lhusu Mines, Barheim Passage, Eastersand, Salikawood, Mosphoran Highwaste, Giza Plains (Raining) secret areas. Need to be done: Crystal Grande and Henne Mines. How do I get to Ultima, Zodiac and Omega?
Finish: Go beat Vayne.[/SPOILERS]

Sorry for asking these questions but I really don't know what to do.
Quick, Aria.