For now I am going to loan my son a 7' 4 weight. It has a grip with a section that has a small diameter and will have a slow action if I overline it.
Bob, that St Croix looks good when I know that my son will use it. I've always had good luck with their products. The spey casting description is similiar to how he cast when I tried to teach him how to cast at 4. He prefered to chase after the bit of yarn at the end of the line so it wasn't a long lesson.
Art, I would like to see your "teaching" rod someday.