Impressive work. This looks very similar to a correction I did for my own personal use but this is even more precise. What I found was that the 4K HDR version isn’t all that bad on a proper HDR display but even not all HDR displays are proper. Converting it to SDR and using the HDR version on a proper HDR display as a guide, I was able to get it looking very good, less magenta, and with much more striking contrast.

This looks even better though! Can’t wait to see the finished project.