ok, what I did was bind the model to the skeleton. NOw, all I have to do is select the entire skeleton and scale it, the model will follow since it is bound to it. The eyes and inside of the mouth are point constrained to specific joints within the skeleton. To get them to scale properly, I just select them along with the entire skeleton and EVERYTHING will scale together. I haven't set up the rigging yet but I think that all I'll have to do is select the locators for each control just as I have to with the eyes and teeth.
To be honest, I would have thought that there would be an easier way to scale a completely rigged model.