TN is indeed a beautiful state with many attractions and lots of history. (Do you know about the Lost State of Franklin?) If you like bluegrass music (I do), it is all around you.
Be aware that TN is also the buckle on the Bible Belt. I found this too creepy. I was evangelized by a barber while in the chair, preached to by the guy who fixed my computer monitor and was given a really crude anti-Catholic pamphlet in the parking lot of a grocery store. And I didn't say anything. While chewing the fat in a computer store with the owners who had moved there from Houston, the lady, who was Jewish, said she was afraid to self-identify herself as such. And this was in one of the big towns.
I suggest a long visit first to see how you like it. Use your stay to scope out where you might want to live. There is a huge variety.
Did I mention the toxic waste? The pollution that beautiful state has suffered is mind-boggling.
Do your homework. TN is a very big state. You can find a good place if you try.
Been there. Done that.
Ed