Would like some suggestions for a not quite Zoomancer, not quite AW build.

After generating enough currency with my first character, I got around to making this monstrosity, which is really what I returned to POE this league for:

https://pobb.in/EjmN9uy5UtTw

I really wanted to go all out and see how much synergy I could squeeze from these new spectres, so my current build takes inspiration from Ghazzy's zoomancer and just adds more stuff to the screen. Currently, it runs the AW of ranged arms, vaal skeles, zombies of slamming, animated guardian of smite, a carrion golem + 3 hordling carrion golems. Now, I'm sure poison or cold could probably do more damage, but I can be a cookie-cutter anytime I want. Instead, I went ahead with lightning to take advantage of the wtfcracked Wrath aura from Spirit of Fortune along with the 20% extra phys to lightning from the Miscreation. The other 3 spectres currently are Warlord, Tiger, and Turtle.

Now the build works just fine - I've run juiced 8 modded T16s, gone into the wildwoods with 3k+ wisps, and the pets don't die. In the last 3 days, the most I've ever lost was a hordling golem and a zombie. More often than not, it's me that pops like a balloon, but I don't cost 5 divs to replace, so that's okay.

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That said, I still have a few questions I'd like to ask the hivemind for suggestions about:

1 - As you can see, I have some odd mana reservation/mana nodes. This is because I just don't have enough ES for eldritch battery, which would require me to find a new chestpiece altogether. Unfortunately, because the masses now realizes that this is Spectre League, everything related is now stupidly overpriced, and I can't see myself getting enough ES to make EB work. I'd love it if there are some other alternatives, since this would let me use up more of my mana, leading me to:

1a - I've annointed charisma, but that's more because the Ashes I purchased came with that. Charisma currently does basically nothing - if I were to replace Charisma, what would be some good options?

2 - I'd like to remove precision and swap on determination instead of leaving it to my turtle. The fact that it waddles is actually a good thing for me, since I can keep it closeby as I spam convocation on CD. The problem is if it happens to waddle away while I'm not looking or if I happen to move and not think about it, my phys reduction tanks and I'm basically food at that point. Warlord helps with the end charge, but it'd be nice to keep determination on all of the time. As a bonus, this would let me replace the turtle with the blasphemer for a second lightning aura. The other issue, of course, is that I can't actually tell how much precision is helping, both in terms of minion accuracy and minion crit. Is precision actually useful here, or is it just not worth it?

3 - As a subpoint of 2, I'm also looking for ways to be less prone to going splat like a ripe melon. I was originally going to spec into the duration node because I'm lazy and I'd like the AWs to last for 2+ minutes (why there's that odd point there atm), but I'm likely going to forgo that, live with the 90s AW, and put the points into life. I'm looking at ~4.5k, which feels like it should be enough, but I still get 1 shot by random things. I'm not sure if that's just my build, or because the wisps still make for some real rippy mobs.

4 - The last time I played, volatility support wasn't in the game. How good is this gem, and should I be slotting it in?

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Any advice would be welcome!