Need some help with finding a good damage upgrade (Eviscerate Elementalist)

Hey guys, I've been playing Travic's Eviscerate Elementalist and I'm really enjoying Delirium Farming and Bossing with it, however with my current setup my damage starts lacking late into Delirium and with boss damage. The tankiness is great so I'm mainly looking for damage upgrades and I wasn't sure what to go for next, so maybe someone here can help me find the next best step. Obviously MB would be big but I just don't see myself farming one this league. ANy help appreciated.

My POB: https://pobb.in/KAVjadgAHIOS