Righteous Fire Build Improvements - How to improve further? (40divs to spend)

Hey Folks!

Usually I am playing one build and this time it is Righteous Fire Build (followed Pohx most of the time).

I am looking for upgrades but I am have never reached that level (100 div) so no idea where to go now. Please advice what and how can I improve from now one so I have clear objective for next few days.

I have about 40divs for upgrades. Changes to trees are also welcome.

Thank you in advance!!

My Profile:

https://poe-profile.info/profile/BRACHSON?realm=pc

POB: https://pastebin.com/3WituxgB

1) Get a better weapon. Yours doesn't have room for Fire DoT Multi.

2) Get a 7L hat. They are pretty cheap now compared to past leagues with so many people making them.

3) Unless you absolutely cannot fix the mana reservation any other way (i.e. annoint Charisma), I would sell the Ashes and get a better amulet. Ashes does very little for RF because you more or less ONLY benefit from the +1 and the reservation efficiency. Where Ashes really shines is in builds that can exploit the quality. You want to get a +2 amulet, preferably marble with some other regen or damage.

4) Quality your sulphur flask.

5) The "8% increased damage per aura on you" mastery is WAY better than the 10% increased effect if you can only have 1.

Weapon - agree
Hat - agree
Ashes - I will look for something better. Written guide said it is BiS but I think you are right.
Quality - looks like not only flask but also awakened gems...good point :)
Master - I have both

Thank you very much! I appreciate your advice!