For now, I went with 03, as it seemed like it could be relatively quick to do and got a bunch of votes. That being said, I'll try to do 01 and 02 as well, as those would be a lot of fun and also got picked a lot.
Trying out a way to keep / use the sketch lines directly to save time and because I'd like to see if I can preserve the look in some way. Here's a WIP so far.
Also, a couple of additional sketches, some based on her Streets of Rage 2 outfit.