From some demos (but not classes) that I have put on in the past, I have to say that I think you are probably going to be covering too much in one hour. If most of this is on paper for them to read later, you could do it, but then most won't read it (in my experience).

I would recommend that you get a few friends (preferably at the same skill level as your prospective students) together and do a "run-through" of the class and encourage your friends to ask questions and act like real students. You'll quickly find out what the problem areas are, what takes too long, what's not interesting, etc.

Cheers,
Ovid