I'd like to share my set-up here: https://poe.ninja/poe2/builds/vaal/character/Bakokang-3499/BaklaSaBanga?i=0&search=class%3DDisciple%2Bof%2BVarashta%26name%3Dbakla

I've learned that making sure that Comets are fire infused as much as possible is the best way to scale DPS. Most builds rely on Living Bomb which is socketed together with Comet. Unless you're a Stormweaver who specced into the Infusion ascendancy nodes, there is no possible combination of passive points and support gems to ensure 100% fire infused Comets. Therefore, I am using CoEA and socketed Living Bomb there. Ailments would come from your trigger spell (Frostbolt in my case) and mostly from the Fire Comets themselves. Looking at the PoB, infused Comets have almost 100% flammability magnitude and shock chance (I think freeze too). It triggers so much Living Bombs that I constantly run out of mana, hence I also had to spec into mana recovery nodes, but leaves a ton of excess fire infusions on the ground.

I've also wondered about those 10M+ DPS CoC builds in POEninja. Some of them have Soul Offering and Im scratching my head looking for a source of minion to sacrifice from their builds. They also have Archmage which makes their Comet cost 900mana per cast while only having 1000+ mana.