[Help]Trying to min max self curse temp chain occultist

I can clear 100% delirium t16 50% of the time. It's rough...looking to improve my gear / gem setup by any veterans of the build out there.

Here is my POB : https://pastebin.com/STLAXTvF

bump

bump clearing 100% t15 consistently now with the upgraded chest.

Went from +1 curse explody chest to a frenzy charge on hit ... biiiig difference. Saving up for spell crit still. Any suggestions on upgrades? Thinking of replacing taste of hate w/ bottled faith but i'm not sure the 900C price tag is worth the upgrade. Anyone persuade me it is? I know it'll help on initial packs before HH buffs.