For anyone interested...
We ended up taking the Guns and Leather class. Good info. Good pacing. Engaging. (Mike, if you're reading this, good job!) In addition to what was needed to apply for the permit, we went away with a lot of significant food-for-thought. Perhaps I'm a little naïve, but the only real surprise was in what seems to me to be a pretty low passing threshold in TN for being licensed to carry a handgun. I know the sate has to find balance between not stepping on 2nd-Ammendment rights and public safety but I guess I wouldn't think more than 30 test questions and higher target accuracy expectations to be unreasonable.