math help with dex-requiring equips.

Hard to know what else you are wearing.
Can you craft/scroll high-dex accessories, or use dex potions, to get that helm on?
Once it's on will they all stay on if you remove the ring or w/e?

i'm only interested in knowing how much dex i would require in my non-agares slots (rings, earrings, face, etc) to be able to take the helmet off and everything else to stay equipped, so i'm pretty much looking for the exact number, if anyone knows how to calculate it

what do you mean about ring or W/E btw?