I also think you'll be find. By the looks of the maps, its a pretty straight shot south. Just check the weather before you leave and use it as your guide. If the forecast is for bad weather, wait it out.
Once we got caught in a freeze. We learned a lot of lessons from that, but the only thing that happened was that our outside hose froze and we had to wait it out before we could leave.
Invest in a small electric heater for night times and let it run keeping the water pipes warm. We put that silver stuff (used to reflect sunlight) in each window and that helped keep the heat in. We bought a roll at Home Depot and cut them to fit, but I saw on facebook that you could use bubble wrap and water and that would work also. Neat trick.
