The path profile of
WDSI and
WBXX tell quite a bit of the story already. Whitwell, TN lies in a valley at least 1000' deep.
WBXX is 91 miles distant and blocked by high terrain. Only the highest gain UHF antenna has a chance. The Antennas Direct XG91 and Winegard HD-9032 are possible consumer grade options. The Wade Taco PB-81-BB or PB-82-BB are likely too cumbersome and expensive but not overkill in terms of gain.
There are enough viable signals for me to install an XG91 and a Winegard YA-1713 if I was in the same situation. I would be happy if I saw the Fox and CW affiliates on good days. A good dual input preamp such as the CM7777 or 10G222 and a high quality rotator would be needed as well. The Hy-Gain AR-40 comes to mind, but the H-VHF YA-1713 does not need to turn, so a CM9521A could be a less expensive option.