Rewriting review:
I wasn't sure about the damage up allowing 2HKO's at first, but I just got a hat with all damage on it, and I found out it actually does work. I don't have a screen recorder, but if you want to put a video in your guide showing how to do 2HKO's, I made one:
https://www.youtube.com/watch?v=U155nyrpBfI
The description of the video gives an explanation of what I'm doing and why you need the damage, which you can also put in the guide if you want.
Anyways, thanks for the great guide, it was very helpful!!