I’m using a Wizz as main and Rogue as hireling. The rogue build is complete (at least I’m pretty pleased with it), but I didn’t made a farmer build yet. I was thinking on make a build with Eternalized+Crystaline+Mythical (now that we have Eternalized acessories). But looking for builds on forum I saw the Flash Fortune one, with Epiphany and farming affix on both chars. Would worth switch my build on hireling to make this? Or should I just build the Main and let the hireling full DPS?
It’s definately easier to get the main + dps hireling setup.
That said - the flash farmer build is probably a lot faster than most other set-ups. At least I hope so, as I’m trying to make the last two items for the build at the moment) 
Can only get at 1000 floor but you can get eternalized MJ at lower floor
Horn will be the easy build for farming