Wow. What a trip that would be. Hopefully, our nation is well on the way to some form of normalcy by then.
I’m sure someone will give you info on how to best get thru the western tier states. Once you drop down to I10, except for the occasional weather system, you’re good to go all the way to Florida staying on I10. We went to Orlando 2 years ago and stayed at Fort Wilderness which is part of the Disney complex. Spaces were rather tight but we were able to get our Cyclone in without to much trouble. Being on Disney property has its perks but there are other nice parks in the area, as was mentioned.
We’re headed for the Keys in April of this year and have reservations at Marathon, Fl.
Enjoy your trip. The winter isn’t a problem once you get to central Texas.