Your sheet looks fine as is. Know that if you made all your NPCs, their power is going to be split a little more than if you were able to invest the time into a single NPC like some of the players of Ainz Oal Gown did. 

There are a good amount of lvl 100 NPCs in the Tomb of Nazarick, and some of them are OUTRAGEOUSLY gimmicky, but they were also developed and invested in by usually only one player. 

Still, even somewhat lower level NPCs (40s-60s) are incredibly powerful compared to most creatures in the New World. Entoma is level 51 and is practically unbreakable against the Blue Rose, and they're adamantine class-- the biggest and baddest adventurers the guild in Re-Estize has to offer. It takes a 300 hundred year-old vampire spamming insecticide to be a [i]threat[/i].

I like the class fantasy you present with the Erudite Mage class. It has good design to its power and counterplay. I'm seeing the way your classes interact, the class fantasy apart of it, and I'm seeing someone who's going to start a cult and spread forbidden knowledge to the adherents. Getting Nyarlathotep vibe here, which is obviously what you were after or you wouldn't have chosen the class name "Crawling Chaos".

It's good.

Also your cohorts are ugly as sin. Fitting of an Old One.