NH to Florida in January

Not familiar with year round rv parks north of the Mason-Dixon but Falling Waters Campsites just over the Potomac River in WV is open all year as is Candy Hill in Winchester, VA. Both along I81. I'm too old to rough it in the cold so we spend the first 2 nights in motels. Used Google Maps to scope out parking and then called motel to be sure. We go to FL by way of Mobile but our first stop is at the Sleep Inn in Wytheville, VA at the intersection of I81 and I77 if you're going that far south. You may get more helpful responses if you say how far 6 hours is from home. Anyhow, hope you enjoy FL.