Yep, I got it up and running last night. Took a lot of hours and I don't have anywhere near enough markers in yet, still working on the file formats and all that lovely stuff, but the proof of concept is in and I'm feeling a pretty good high from it.
I even took that scary step and sent an email to stephenls and asked if they would be willing to let me put their map online. It's okay if they say no, but I won't know until I tried. It will mean I'll need to create a database of every location in Creation, along with their coordinates, but that's another project I think the community could use if they don't already have it.