PoE Less Duration, Curse builds

Hi, im trying to craft a build using the Tainted Pact Colar Amulet ("Chaos damage over time taken heals you instead while leeching life") and self poisons via The Golden Rule unique jewel ("poisons you inflict are reflected back to you if you have fewer than 100 poisons"), i have already managed to make a build that is able to tank most bosses without taking damage, the problem was that as soon we werent leeching or getting poisons, we would die very easily. So now im trying to think of ways to always have Tainted Pact active, regardless of monsters being hit or not. I've come up with a few id

I'm interested in a Cane of Kulemak build and I was considering an Impending Doom build. The problem is you need doom to tick to maximum and afterward, your curse needs to expire. I was thinking of running the Kulemak Chaos staff with +3 supported and 14% Qual of support gems to get a high level Enhance and Empower on a skill and immediately thought of Impending Doom. ~~The Doom tick rate with this setup would be: Anomalous Enfeeble(there's also Punishment but that's not as useful) which has 40% doom increased rate at 20%, with Enhance it becomes 142% increased doom rate. 150% doom rat