PoE Caustic Arrow of Poison, ZePepsico builds

My current build is a PF MF CA of poison as follow: I am currently doing T11 fully juiced (+2 proj corrupted, 4 sextants, 4 scarabs) and I find it long to kill some mobs/packs and while i facetank most spires, I still occasionally die to random stuff (never clear what kills me). I can do 5 maps deathless (but slow) and one map using 4-5 portals due to random unexplained deaths. I am looking for: 1. how to improve my build (both more dps / more tankiness) and a path to take it up to T14+ and click all quantity altars without lookin