venom gyre SSF, curious the best path forward

https://pobb.in/qSqvpSeMY6ML

SO. im a bit stupid, and im sure some of these decisions are stupid, i have a few glaring issues, but to preface, im working on finding a jewel to cap my cold res, and im aware my anoint is for dual wield, the build guide from kobe i was following suggested dual wield would be ideal with this anoint but as soon as i go dual wield i turn into a feather, i have 0 defence and just cant progress when im that weak, as fun as the damage is its not worth dropping this shield which has become crucial for my survivability and a bit of a crutch, theres a few uniques in his build https://pobb.in/4D2bOuVcuglz

the gloves omniscience and the helmet. i am working toward farming omniscience but im aware im a while off for sure. So, im wondering is this shield as helpful as i think it is? or would another shield benefit me more, potentially one with mana res which i just found on a shaper or elder or something rare. I really dont know, i think the current amulet i have is really good too, and id switch the anoint up to something more defence oriented if i knew i wasnt gonna switch to dual wield down the line. IDK, theres probably a ton of other glariung issues but this is my first SSF and this has been working for me decently i suppose. the clear is great the bossing is good. But i feel like my shield may be holding me back and maybe you guys can tell me some other things. Thanks in advance. :) oh also if this helps i just got my first watchstone and am working through the mavven encounters and farming Searing exarch for omniscience.