Help Improve My BAMA build

Here is my character profile, I am running perfect guardian turtle, perfect primal Thunderbird, perfect spirit of fortune and spectral leader. Kineticist with ~-120 lightning rest + prototype (I am aware that I am running two auras that increases her lightning res). AG with kingmaker + garb + crown. Build feel strong up until T17 + Risk or 8 modded T16.5 + Risk. I am having trouble farming blightheart + invigoration with blightspawn node allocated and struggles a lot past a couple empowering towers. Cannot do Blooming + TItanic at all. I know there are some min max I can still do (+2 max res on body, tattoo). However I feel like these will not help me get past the hurtle, as I feel pretty far from being able to deal with the blight bosses and the min max are just very minor improvements.

In the case that if this build just can't do that type of content, happy to hear build suggestion that can (ideally no-minimal crafting).