Chaos/Poison Necro: How to push build to 8mod T16?

This is my build currently: https://pobb.in/xeLrUC8nd2LK

I was following TheGam3Report's Chaos Zombies but found it was way too expensive to keep up with, and his builds are specializing for AFK Blight/Simulacrum. For reference: https://poe.ninja/pob/5dd78

But now I'm sort of following Helm-breaker's Chaos/Poison army with an Explode AG, as I've found adding poison damage made my build way better with bosses and rares. https://pobb.in/8rFmt6dDuKg_ Currently in the medium/yellow config of this build.

So now I have Chaos Zombies passive tree with poison jewel sockets and an explode AG. I'm currently running 8mod T14s for money. I get 1-shot by random things in T16 8mods and kill the bosses too slowly. I'm about 5-7d into the build. The clear is pretty smooth but the bossing and movespeed needs A LOT of work.

Wand1 (60c), Wand2 (40c) Helmet (60c) Amulet (80c) Rings (10c) Gloves (40c) Boots (60c) Belt (50c) Elegant Hubris (1d) Explode AG (1.25d) Jewels (50c)

How do I push this build? Mainly, what kind of things are minion builds good at running to make money? (I don't have any movespeed). Considering Harvest and Expedition because of Explode AG, and with enough poison I think I can do harvest bosses and sit offscreen while minions do the work.

Notes: Me and minions are over-overcapped on resists, so mods like ele weakness are dealt with. I might have a bit of minion accuracy problems. What else should I consider for T16 8mods?

I already know some preliminary mandatory things such as:

A +1 aggressive wand (probably 2-5d if I recombinate)

A +2 wand (5d)

Finish slotting in Hungry Loop.

More poison % jewels (1d for high quality ones)

Hit my annul on the helmet for +1 zombies/skellies.

Considering Vaal Summon Skeletons + Unbound Ailments for better bossing, but not sure how effective they are due to the low HP. I find Helm-breaker's POB to be pretty inflated due to the skeletons and using ideal ideal configs, I imagine they get 1-shot by most bosses.

Main question: Doppelganger or The Covenant Spidersilk Robe?? (2-3d)

Further goals:

12-passive minion damage/AS/Life Large cluster jewel.

Stormshroud, Watcher's Eye, ailment immunity

How can I fit spell suppression and/or block into this build? Is it worth putting in 20+ divs?