With regard to Danger Girl, I have the figures, the Abby Chase statue (the original one not the new Sideshow one with Ozempic face), the tpb's, the colletor's edition hardback, various single issues signed by J. Scott and the SDCC poster he just happened to be selling one of the years I went. Supposedly he was going to do a run on Spiderman, which I'm sure would have been remembered well, but after a few years when I'd see him it sounded more and more distant until it was basically only doing covers, which is what we got.
His site has a few DG prints that get fairly cheap around the holidays if you wanted more of those. Most of the DG hype has dissipated so they tend to be the cheaper ones on the site.