Best route to Florida with 5th wheel

My route to/from Maine and Fl avoids the Boston to Washington area completely. From Exeter hop on 101 to Manchester then up to Concord to 9 to Brattleboro. Only takes a little over two hours and you skip the tolls on 95 and the traffic on 495 to 90, etc. From Brattleboro I go south on I91 to I90. Then 90 to 87 to 287 to 78 to I81. From there you have many options, but if you prefer not to drive steep inclines over the Blue Ridge, take I66 to 17 to I95 at Fredericksburg then south on I95 to I10 to 301 to 75 just north of Ocala. I have used all the other routes mentioned and the difference in time and miles is minor. The biggest difference to me is the steep grades on 77. Beautiful scenery tho. My route avoids all the big steep grades. From Exeter I would probably spend the first night at Western Village in Carlisle Pa just off I81. Second night in Fayettville Rv near Wade NC, third night in Coastal Ga at Brunswick and you could be in Ft Myers the fourth night. You can also take I81 all the way south to I75 but lots of folks avoid Atlanta. You didn't mention if you wanted to make visits along the way. You might vary your route based on things you want to see? There are also a number of non interstate routes available, but the route I use is mostly high speed and lots of services along the way.