[2.4] chaos ancestral warchief - need some advice

Hi all!

I'm looking for some advice about optimisation on my char!
It's a dual ancestral warchief chaos/poison - rt - ci build.

First my tree: link

Main attack gems:
-ancestral warchief + added chaos dmg + void manipulation + poison + faster attack + increase aoe

And then my stuff:


Some stats:
-lvl 79
-9k6 dps with totem buff
-9k5 es
-95/100/135 res on merciless difficulty

And here my questions:
1- As effect on kill does not work on totem, what should i do with next ascendancy points?

2- I dont know what to do on next points?
-- more spell dmg? (occultist's dominion node)
-- some chaos/dot? (corruption node)
-- some jewels slots?
-- getting a second curse? (sovereignty for mana reservation)
-- essence surge ?

3- Seeing my stuff ( i know some parts amu/ring need some upgrade ), did I miss a unique with nice property?

4- any general comments?


thz,
Balow