Thanks for the advice! Fortunately, we have a few parks in Southern Illinois that offer a little elevation change, but it is nothing compared to what we are about to face. I just ordered a 4th pair of boots that offer a but more ankle support than the other 3 I have been testing.

We plan to stop at REI on our way to Gatlinburg, so I will pick up some trekking poles. My boyfriend is convinced he doesn't need them, but I am getting two sets anyway.

Again, thank you for the advice. Please let me know if you think of anything else!