Yes, it probably would be a very long day with the BJU to add too many things to it. You could always stretch Art of Argument over two years, or schedule only 1 or 2 days a week, if you really wanted to do it. Or you could eliminate tests and quizzes, and just use it as a supplement that the two of you have a "conference" about each week. Or you could something The Fallacy Detective instead, which would only be once a week anyway.

I am very excited about America the Beautiful. I've heard very good things about Notgrass, so I am expecting it to be great!