Leave it winterized till you get a bit south. I usually plan on southern Va. for an overnight stop and set up there, in my case, it's Petersburg, VA. I'll get heat in the trailer and then run the water in. If it's real cold, I'll delay till Georgia but VA is usually good.
Bring a couple of gallon jugs of water and you can use the bathroom on the road.
I'm leaving northern NY around the first of the year. I'll have heat in the trailer before I leave and it will hold for the day. With the MH, you'll be in better shape for heat, Enjoy the trip.