PoE Detonate Dead, Chieftain builds

So been in love with fulcrum. Iv made more currency then ever and want to see what I can do to push this build to the limit some more Suggestions from you smarter people would be awesome . ( btw no issues clearing fully juiced wishes up maps just wanted to see what else I could achieve .)

Heyo, typical AFK abyss abusing MF chieftain here, Pob for no reason: I wanted to ask how i can get away with increasing my single target via removing my MF gear (ring, boots, gloves, chest) so i can participate in some of the challenges that involve killing a boss or simu or heist or whatever, Simply swapping mf peices for rares or uniques and adding in (insert single target skill here) in these peices and call it a day doing enough dps to clear bosses, Was considering penance brand since thats what all the fuss is about on a cloak of flame or maybe bodyswap?

I have been slowly farming up div to buy a Fulcrum and it has been super slow going. I finally got enough div, but now I am second guessing whether or not the Fulcrum is worth it. Right now, I am using Mokou's Embrace with the corruption that poison cannot be inflicted on me. With that I have a 3-link with CWS, Lifetap and Forbidden rite, with a 100+ chance to ignite myself. It's my little "poor man's Fulcrum" setup. I also have the gloves that spread ignites (POB at the bottom), and I am mopping up maps just as the Fulcrum builds do on the v

tl;dr it seems bad but I'm not that experienced with scaling fire DoT. Damage is simulated using DD corpse life that will provide same exact damage that the totem will. The idea is to use Searing Bond totems which can be scaled through +1 fire gems to increase totem life while also doing fire DoT. Since we're chieftain with 90% res, we use RF for more fire DoT and more spell damage for searing bond. And then we use arcanist brand for flame surge/curse while using scorching ray for infusion/stronger exposure since there's nothing else to do while your totem ign

The idea is to play it similar to the Diablo 2 Necromancer, just let the bodies hit the floor, I mean explode. I think it will have a good clearspeed, but will have problems to kill bosses, something I would be fine with. It would look along the lines of following PoB: Create the first corpses with desecrate totem (to also use the Maurauder Ascendency), the scorch them with scroching ray while let them explode even more with infernal cry.