If you have actually lived in Florida your whole adult life, then RVing, or even living through some of our winters in the "north" will be an experience for you.
One issue is heating in any type of RV. Most of the most recent winters have been so brutal that you just can't run a couple ceramic heaters, it takes tons of propane in an RV to survive.
A CG we use for part of the summer in Illinois keeps a few sites open through the winter. The ones that stay there have one or two 100 gallon propane tanks placed outside their units.
I can assure you it is not pleasant driving on ice and snow every day for months on end. It may sound "cozy" but it is depressing and oftentimes dangerous.