Suggestions needed for winter

[JandC]

We are heading to Florida (from Illinois) the end of December. Since our campground does not allow skirting, this is what I am going to do to get us through the cold until then. I am replacing the worn rubber seals around all the exterior hatches. Have 3 ceramic heaters. Buying a heated water hose for our fresh water hook-up. Placing a 55 gallon drum over the campground water spigot with holes cut for heated water hose to come out through. Replacing stinky-slinky dump hose with 4" PVC and rubber fittings. My main question is can I place a ceramic heater in the basement to help supplement the underbelly heat when the furnace is not running? Also, when we pull out we are going to Nashville TN the first night, but that travel day may be freezing temps. Can I just bypass and empty hot water heater, run RV antifreeze through water lines, and make the 10 hour run to Nashville? This is our first winter experience in the Monte and any suggestions would be great!