PoE Shield Crush, Salt-Freedom-4433 builds

So this is not a build showcase, it's a work in progress, I'm looking for feedback on how to make the character more powerful without heavy investment - I'm a casual player so I can sink a few more divines in at most. Basically the idea is to do the Snakebite/Frenzy stacking thing, but go crit poison because Emperor's Vigilance, Seething Fury give a ton of extra crit multi, kind of like the Nightblade poison builds. I'm also getting a bunch of crit chance from self-blind with Second Sight Keystone, good synergy because you don't need a high dps weapon since your shield is doing all your damage