PoE Witch, Righteous Fire, Projectile builds

Ok so I made a build that I was thinking about for some time and I always hear about wardless build being much more pricey - well which it is :D but usually people say that it ends up being less tanky in the end but from my end it does not seem like it, atleast compared to some high investment wardloops I checked it seems quite alright. Here it is: I think u can build this much cheaper, without voices, sublime vision, corrupted uniques and some alt gems, I think you could assemble something that works within 50div. Can you

Only a proof-of concept as I had a previously leveled witch. I haven't played a self-chill build before so I did some reading of possible builds. I know that people usually do it with Lightning/molten strike for attacks or spark for spells. I have another combo I want to try this with: Hydrosphere Vortex. The idea is to use vortex on m1 which should clear trash but also inflict a freeze/brittle on Hydro. Hydro has a bunch of extra levels + crit so should be good enough for map bosses/guardians. The method for Self-chill is Winterweave, Call of the Void + FR

This was my build for Sanctum, but reading through the patch notes I see no HUGE reason why this build shouldn't work well in 3.21 (RIP arcane surge, as well as regain mana after every 5th cast and 3% of mana as es masteries). This build focuses on a very spicy interaction that I'm almost certain has been used before, but I can't seem to find any builds using it on PoE ninja. In short, we get our mana costs as high as possible using archmage, and then we take 400% of that mana cost as physical damage with scold's bridle. The hit damage for this is going to be pretty high (6-8k) so we mitigate