Great idea for a custom watch!
I always felt like there is too much of an empty space at the 9oclock area of this dial. Maybe this dial was originally meant for collaborators to stick their logos at that area. I also have a project, but in my case I would use the stickers that come with the plastic models of airplanes (Revel and Italeri, for instance).
As for the datewheel, that's a tough one. They are only viable when printed in batches.