I think this is a great idea, especially if you have a lot of content and want to give the user the choice to move on their own or be "guided" through the course.
I threw together a very quick example. I did the same thing Jeff mentioned with duplicating the slides. You really don't have to change much after duplicating, just the advancing options.
I attached the file if you want to see it. If you want to see the published version, you can see it here.
The second option that Jeff suggests may be your best option, if you're working with a very large course.
I'd love to see what you come up with, though! Keep us updated.