Molten strike of zenith - what to do next?

https://pobb.in/EL34Y6hl_p8o

Guys, can u please advice me what upgrade should i do next? I'd like to be even tankier, cuz for DMG upgrade im saving up for sword with "projectiles return to u". I'm all res capped, chaos too with progenesis on, and i have very good flask time up, like 99% of the time they're up.