I am not sure on the route to FL for you but the following advice will work for any mountain driving or steep grades.
1. First you need an adequate tow vehicle. A diesel engine equipped truck is the best for towing, but a gas truck will do.
2. Stay in the right lane as you up and down the inclines. Pick a gear that will get you up this incline. If it is a manual transmission do not shift on the incline; you may not get it back into gear. What every gear you go up in use the same gear to go down with. I usually try for 5th gear on my automatic transmission. I usually run around 1,500 to 2,000 RPMS, I do not worry about speed as I am under 60MPH when going up hill.
3. Use your brakes sparingly as you go down hill; if equipped with an engine exhaust brake use this to slow you down.
4. If the trucks are using their flashers than turn on your flashers when going up hill also.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67