Hi neighbor!
I came back from Nova Scotia to Little Rock on a motorcycle last year and hate I-40 maybe as much as you do. I came down the Western Kentucky Parkway to I-24 to Paducah. Then Hwy 62 over to Charleston and I-57 for a very short distance. Then Hwy 60 over to Hwy 67 just above Green Forest and Hwy 67 home.
On a motorcycle, I'd do that again to avoid I-40.
But we just completed the same trip in the RV and we just used I-40. The bike, being more maneuverable was worth the effort of the two-lanes and little towns. In the RV it was worth the aggravation to stay on the Interstate.
Safe travels to you, however you to it.
FWIW, the Western Kentucky Parkway is much nicer than I-40 if you can deal with the additional two-lane.