[LoN]Need help from some fellow LoN Bomb users

I am currently playing invoker thorns, pushing it to gr69 and probably gr70 tomorrow. I am trying to find gear for the LoN Bomb set because it looks very fun and strong to play.

Thing is that the gear to find for the build is absolutely insane; all the items in ancient is gonna be long to get.

What I was wondering was if there was any way to get the items faster (for example use Cube Upgrades instead of Kadala) and at what point the build could start being viable (how many ancients).

I was also wondering what first items I should try to get as ancient to start playing it effectively.

Thank you crusies <3