Theorycraft Help, Null's Inclination + Herald of Agony

I feel like there's a decent build to be had with Herald of Agony and Null's Inclination but I could use some ideas.

Basic Idea - Caustic Arrow/Toxic Rain/Scourge Arrow and Herald of Agony seem designed to work together by generating poison stacks, which increases Herald of Agony's damage. Since Herald of Agony is a minion, Null's Inclination will buff it's damage, in addition to summoning other minions and having a large amount of added chaos damage built into the bow.

Cons: Null's Inclination has a low base physical damage, which makes scaling the attack skills harder.

Unknown's: If DOTs/Herald will trigger Null's Inclination. I know the wiki states the old Caustic Arrow's cloud won't trigger it, but possibly the new one's will?

What do you guys think the best build would be for this? Would Ranger or Witch be better?


Skill Gem Ideas:
Null's Inclination: Summon Skeleton, Animate Weapon, SRS, Added Chaos Damage, Minion Damage, Multistrike
Either
Caustic Arrow, Mirage Arrow, Summon Phantasm on Kill Support, Volley, Void Manipulation, Added Chaos
Or
Toxic Rain, Mirage Arrow, Summon Phantasm on Kill Support, Void Manipulation, Added Chaos Damage, Faster Attacks
Or
Scourge Arrow: Void Manipulation, Added Chaos Damage, Faster Attacks, Slower Projectile, Summon Phantasm on kill

4Ls - Raise Zombie, Fortify, Withering Touch, Multistrike/Minion Life
4Ls - Blink Arrow, Faster Projectiles & CWDT, Immortal Call
4Ls - Herald of Agony, Minion Damage, Volley & Despair

I would like to have Despair and Temporal Chains on a Curse on hit with ball lightning/orb of lightning, but am lacking links

Passive Tree Idea:
https://poeplanner.com/AA4AAQkADhYBAIGw2KLZyBT1b2qMFr8mlWHiVUuMNonTcFIqC13yKwoRL-tjtUg2PZ2qbIxirOOEDdFjQ7TFwuwqW3n2UuyCXkM2BbUGcHp_k5lOn42_1CMwcd2oS3g6QlBCUzWTJ2wLyT2_l_IeIvRtGX0Ya9vsikyzBAeD21XGOlismPfXzLyqxIVgTbmboY9GHRT60hZv42okqjbpZp6g5mdxSp-JvBBRmE06xhpsiEAqmKasqqmQM2D4JSGnCOvuHNy4kyj6gsf56NP7E2wGSWqsIG5QMNtewzqJ4MgjBZNJExZAhX0i6ujWUUfnVCT9_94wfMjcwUn-HYSiB5lZ8EyOMjIQktmGvG8AAAAAAA==

Link to the two other class threads for this: (They have different passive trees)
https://www.pathofexile.com/forum/view-thread/2201918
https://www.pathofexile.com/forum/view-thread/2201914