SST CoC EK Deadeye TheoryCraft

I'm theorycrafting a Spectral Shield Throw Cast on Crit Ethereal Knives Deadeye.

The last post on this topic seems to be around a year ago, and seemed to conclude that it's not worth it to use CoC with SST. I'm trying a different track where I want to use the massive number of projectiles to spread my poisons far faster. I also plan to blade blast (with more poison) .

I'd love ideas about to make substantive improvements on the build. Note, the gear was selected to be good, with the uniques likely to be obtainable (if expensive), and the rares may not be reasonable. If you see an impossible combination of mods, then I'd like to know about that, but don't whinge at me about the levels chosen--I tried to avoid T1 mods on everything, but some are probably above where I'd normally get).

Here's my PoB: https://pastebin.com/u9Y7sQjb

I've come up with this, but the listed combined DPS is low-ish (around 117k from poison, bleeding, Shield, shards & EK). I have a few suspicions that this isn't counting the poison stacks as well as I'd like, but I'm not sure how the boss DPS will hold. I think it'd be fine with plague bearer.

I also have a good amount of EHP due to evasion, block & dodge (52% block, 19k evasion, & 40% dodge), but only 3565 actual life. I'm sure that'll make this non HC viable.