I'm thinking why not 180-200 floors instead 101, but w/e, it's still good.
I don't see too much point about complaining about no quest mythstones, since you can convert crap ones to these and they will remain forever (until you use to make mythic, but that is not the point)!
As a personal SOLO choice, I use crushing flames (6) (cause it's guaranted KO on common rarity enemies) + aether set affix (5) (for element critical chance) + 6 quest myth (200% exp) + (Taunt and Orb + Reactor) on LEVEL 2 gears with 120% pack size at floors 180-200.
It just made me reach from epic ascension to eternal in less than 2 days. Although, it may cost some crafting material, but it's very rewarding.
PS.: I had a vídeo to show the build, but I've noticed I deleted it for some reason I don't remember, LOL