Need advice. PA TO FLORIDA?

I have been through Atlanta 2 times in my RV, once it was CRAZY, the next time, I planned much better and went through very, very early in the morning to avoid the rush and congestion. Charlotte is very busy during the rush hours in the AM and PM. Scenery over through Alabama and that route is nice, something different, FWIW we have driven all over the south on back roads and they are very good, scenic and interesting, I prefer them when possible. Not like the roads in PA, WV, MD. My home is in the Greensburg area.