I have a stupid dream about playing self cast Frostbolt without Icenova. I am trying to make PoB but it looks like very weak.

https://pastebin.com/mZvQiNxF

1. Does this build can be significantly improved? x2 at least

2. If no.. Is there any good way to deal with my elemental resistances if I take The Annihilating Light or only from items and tree?