Just a heads up spoiler warning for other people first.
I only used Lady Vengeance's Storage once to store the Phoenix Egg.
If it helps, I skipped the first encounter with the Elf Daeyena in Fort Joy and triggered the quest from a book I stumbled upon (don't remember where). On act 2, I got the chestplate first via strength check and then killed the Daeyena for the Boots and Greaves after demanding some sort of reward from her.
I spent most of act 2 fully utilizing the set and stopped using around the end of act 3.
Before I do any major major quest in Arx, I noticed that every piece except the chestplate was upgraded to level 18.
I hope this helps and if you need to ask anything please ask away.
Last edited by MilkyTea; 16/08/20 04:33 AM.