I don't know if you were aware, but the level caps are gone for CoP battlefields. Ironically, this makes stuff like the Antlion in Attohwa Chasm the more difficult fights.
A static isn't really needed anymore. You'll need probably a 70+ ranged or mage job for Ouryos, and everything else can definitely be done by an angry 90. I soloed Apocalypse Nigh the other day on bst. You might need 2-3 for Tenzen fight, I haven't tried that one since cap increase, but I'd be surprised if a 90 war couldn't hammer him into the deck of the airship in time to avoid him self skillchaining.
If you get your cutscenes done, feel free to send me (Bahzell) a tell and I'll be glad to come on an appropriate job and help out. I'm pretty sure bst can own Promathia for instance, especially with a few dawn mulsum.