Need help to improve the build (probably the most fun spellslinger build)

I made a fun build overall.

https://pastebin.com/dFEekAn8

It automatically teleports to an enemy, generate charges (Romira's banquet + Voll's devotion) with multiple spellslinger spells (most of the time I have 5 power and 7 endurance charges) and discharge them 2 times per attack (one major 6-link discharge with spellslinger and a smaller one with Poet's pen) which results in about 1400 life gain per attack from Kingsguard. The fun thing is that my spells setup works very well with elemental equilibrium and charge generation mechanism. With each attack I spawn this sequence of spells: first comes Bodyswap, then goes Cold snap, then Discharge, Ice nova, and another Discharge (from Poet's pen). The order of spells was identified by removing the spells from the sequence and observing which elements were the last ones to calculate EE. And this order seems to be the same with this spells set.

Each spell generates a power charge (or 5 power charges with 40% chance). Each power charge consumed with discharge generates 7 endurance charges with 40% chance. Those sharges get blown with discharge for about 2131.5 base fire damage and 1712.5 base lightning damage at average (at maximum charges which is almost always true). For 6 linked (or 5 if we mention that spellslinger doesn't add much damage) spell I expected very high damage output from almost 4k average base spell damage.

Atack speed was adjusted to match spellslinger effective cooldown threshold of 363ms from that post: https://www.reddit.com/r/pathofexile/comments/fh8bnh/spellslinger_cooldown_thresholds_and_all_other/

So far overall this build feels pretty smooth and fun to play with decent surviability and fine clearspeed. But single target damage is not high enough for endgame and frequently sudden damage spikes oneshots me. I am sure I have done something wrong while planning this build. I think I miss something that could improve the build.

Any tips to improve surviability and damage output are welcome!

Thanks for your attention.

I'm a little late but wanna tell me more baout how the build went, where the cons were, other possiblities-- im thinking of trying it out after finding volls in ssf