I sell everything that isnt 10 meseta, max element or has more than 3 racial percents 40+.
Misc items get stored. Atomizers get sold.

10 meseta items have exceptions, like I sell things that I get with shitty percents, or with no PA.

I sell all 1-3 slot armor, keep the 4s but never have more than 3 of each and dont keep lower than level 35 armor. At most, I only keep 7 stars.