Rich Altman's is the music city show and is in Oct
https://m.facebook.com/pages/categor...7124269055451/
Late September will be the big Lighthouse show
https://m.facebook.com/NashvilleSpor...lectiblesShow/
Suppose I'm biased, but I think both would be worth a few hour drive. Each will have around 200 tables with most anything you might be looking for. Beckett and JSA usually come in Sep and PSA came to the Music City (Oct) show 2 years ago. The Sep usually will have one or two autograph guests (typically with local ties) and the Oct show will have several more nationally known (and more expensive) signers.
I'll be set up in Sep, come say hi.
Edited to add: my opinion, at least from a vintage collector point of view, is the Sep show is more casual "weekend warrior" type dealers, and probably the better show to find deals. Oct is more national dealers with more "stuff" but fewer deals. But they're both fun and worth coming to.