Elixir is rare which is why the suggestion to farm floors up to 500 i recommend and as high of item drops as possible, no matter what difficulty. Of course speed farming too and potentially legend maps. The reason being that Mythstones and Crystals at higher floors increase in tiers so it is more common for the Higher end rare crystals to drop (floor 500, Obsidian has the % Jasper drops at any item drops).
Epiphany isn’t mandatory and you need floor 650 or unlock it to get it anyway since it won’t appear from amethyst. But Epiphany definitely does help in many things.
The reason I say your farm affixes are low is based on how much you can actually get now. Fortunate means 600% is actually 400% +200% for gold and luck for eg and 650% means 850% without epiphany in cap. Item drops, well you can get more definitely and fortune mythstone is a good start on a budget to save Ruby crystals. If you use hirling, well item drops can increase a lot based on the 100% bonus alone but doesn’t mean you can’t enjoy the game alone. Still i recommend hirlings if you want.
and yes, item drops makes a huge difference for eternals. Why? Because more legends can drop and more gear drops that can turn into legends (based on high luck), then more gear that can turn into eternals or crystal legends. Eternalized/crystalline with perk of course helps. I see you got the fortunate and treasured perk, good choices.
Anyway im glad you like the post and wish you luck!
Well you can use Epiphany on one character for farm affixes but since the calculations are averaged by hirlings also, that means the increase isn’t the full 25% unless you put Epiphany on both characters. If it’s not farm affixes/exp though, then epiphany on one character is full 25% for the rest of the affixes in cap increases. This at rank (5) ofc.
Here’s a useful guide I created to help give ideas in planning a farm build whether basic or all out hardcore: