Whats the best way to get an Echovald Shield

So... my mainquestion is whats the best way to get an Echovald Shield, accept buying from players?
So that makes me some more question:
-Where can I best farm:
-Dragon mosses?
-Undergrowths?
-Stone Scale Kirin?
-Is it true that Oni drop them too?
-Whats the best place to farm Oni?
-Whats the best region to run Kurzick Chests?

If you can answer one of these question I'm very glad.
And remember... All opinions are welcome!!

If you want to help me Ingame:
Ign is Crucist Ovv

Farm Strongroot til he drops his green.

You should probably go check out the Farming Forum for stuff like this.