kyotesue-
We had a 98 or 99 Starflyte for 4 years before the Trail-Lite. One technique I used with success will ONLY work if you don't drink the water, brush your teeth with the water and don't cook with the water. I added a small quantity (1 gal) of anti freeze to half a tank of fresh water and ran it through the lines to fill them. I added another half of a gallon of antifreeze to each grey and black water tank. On predicted cold nights I would put a small electric heater in the coach set to keep it around 50-55 degrees. I opened the cabinet door where the water heater was so that the heat could get to it and opened the dinette seat cover so the fresh water could be warmed.
You will love the V-10. My wife said I drove it like a performance car on the turnpike. Our Trail Lite has the Chevy 6 liter, but the new Four Winds Siesta we ordered is back to the V-10. Just remember to check the oil level frequently in the V-10. It has a tendency to use oil. If you smell 'burning grass' and think the pine barrens are on fire, stop and check the oil.