Thanks! I know comparatively little about woodworking but am hoping to learn a thing or two. I planned on having trim of some sort on both the inside and outside of the windows but wanted to be as neat as possible with my cuts so I don't run the risk of ruining the door. Windows will be reeded glass - I've already sourced some double paned ones from a local glass supplier.
I do plan on making this from a wood veneered, solid core door. Basically the kind readily available at Home Depot for about $60 or so. A few companies make them premade, but they start around $2,000 and go up from there so if I do end up scrapping one I still come out pretty far ahead. I can handle the trim and finishing, but haven't tried cutting anything precice in something like this before. I appreciate the suggestions! Here's the layout.