I kind of recently finished Ascending a Rogue & Warrior Team using only Myth Stones on my Gears, having only a set of Level 1 Gears and Level 100 Gears.
I think between Perk 4 & 5, I took some of the MS off and replaced them with affixes on the Level 100 Gears.
here’s the Thread I posted on my Journey to Six Perks.