I think your weapon is holding you back. Everything else looks fine enough to clear 70. The extra stacks with Sacred Harvester will help you with survival while wearing Lakumba's Ornament.
Good luck pal!
Edit: Just realized I replied to a month old post. Hopefully it's helpful regardless.
Hello everyone, I came back to play a few days and I can not do rift + 70, I'm dying very easy.
https://www.diablofans.com/builds/95762-jade-harvester-boom-gr110
My character: https://www.d3planner.com/516947939
I think your weapon is holding you back. Everything else looks fine enough to clear 70. The extra stacks with Sacred Harvester will help you with survival while wearing Lakumba's Ornament.
Good luck pal!
Edit: Just realized I replied to a month old post. Hopefully it's helpful regardless.