AHHH you just inspired me to do the costume for my last nu screams TY /////////////
CLOTHED NUS ARE GR8 YELLS LOTS

Hello! I don't mind at all!
It's not normally done I think, since it takes a lot of time and is a bit tedious, but I'll show you what's helped me!
Firstly, this guide [x] helps in transferring specific numbers to CSP settings. It's also to note some of CSP settings goes in reverse to the numbers in SAI, and some go on a completely different curve! Ultimately, it takes a bit of trial and error to find the right buttons and feeling.
Secondly, for textures I take the texture file from SAI and convert it into a CSP texture, to then use within the brush settings. There are other guides for this.
Thirdly, I just sort of organized my CSP to look like my SAI layout, and even transferred over my hotkeys, etc.

I have 2 sets basically of each brush I've transferred, my first trial, and my second trial.
For some brushes, I've had to download a different CSP brush that feels similar, then tweak it to be even more similar to my SAI settings, because sometimes doing it from scratch still doesn't work out quite right. Just trust whatever feels best I think. Took me a few days.

WEHHH thank you ///// <3