This is super cool! I admire those who make the effort to keep their software running on old unsupported OSs. There's a thriving community of new and existing XP users and I don't see it going away despite it being out of support for over a decade. It's one of the last great Windows versions and its long life ensured a huge software catalog is available for exploring, now including Principia.
Legacy Update is really a godsend, props to the people maintaining it. The only driver I actually had to install manually via USB was just the Ethernet controller, and then after that was done I could just go online to Legacy Update and let it sit and download and install the rest.
https://legacyupdate.net/
people like you are keeping the internet alive