PoE Lightning Arrow, Chaos builds without Ballista Totem, Shrapnel Ballista

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

I"m currently playing a Caustic Arrow Pathfinder and it has been very strong and fun. And although I've been able to take down some of the Ubers I'd like the fights to go a bit smoother. I bought my first ever mageblood and was thinking of doing a penance brand or Kinetic Bolt build. Penance brand seems kind of weak at mapping and KB seems like it might get very expensive. I'm also considering just selling the mageblood and dropping another 300+ divines in my CA PF cause it's already pretty insane. Any recommendations or advice? Here's my current PoB.. [

Level 90 PoB (I use community edition): I'm using ball lightning in a couple places - the main one is in a CoC setup with blade flurry, and also a low level one in my helm with GMP, high-level added chaos, and CwDT. This procs all the time because of the herald of thunder and storm secret ring. I have another CwDT setup with blade vortex and power charge on crit for reliable power charges. That one also triggers immortal cry. I've stacked a bunch of life and ES gained on attack/spell hit, so I'm basically unkillable outside of one-shots. Aspect of the spider i