scion chaos dual flame totem

https://www.pathofexile.com/account/view-profile/Selescu/characters
this is my character and i was hoping you guys could shed some light into what i could do make my character stronger, like what would be a good 6th gem on my chest or what nodes should i go for next ?

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https://www.pathofexile.com/account/view-profile/Selescu/characters

Celestial Punishement is useless as you won't be able to ignite if don't deal fire damage.
I doubt the little bit of lightning damage from HoT is enough to make it past the shocking threshold, so no benefit there too.
I would also replace Mokou's Embace. There are better rare rings with life/resist/cast speed than the bit of increased fire damage you get out of Mokou's.
Flammability is useless too. You don't deal fire damage, so lowering the fire resistance of your enemies has no effect on the damage you are dealing. Try a defensive curse like temporal chains instead. Vulnerability won't be worth it as the base damage inflicting the poison status won't be that high. As you only get 20% of base damage over 2 seconds (i think) dot when poisoned, the additional dot from vulnerabilitiy won't be that high.

I'ld use empower as 6th link for flame totem as you don't have a crit build.

ty for your time