Art, I agree with all you posted, except this part,
Put enough in the fresh water tank to cover the bottom.
Do not pour any RV anti freeze in the fresh water tank!!!!!
You will spend the rest of your life trying to get it all out. If the drain plug was on the bottom instead of the side on the tank it wouldn't be quite as bad.
Besides, it's not necessary. If you drain the tank as best you can there will be enough room for expansion to accommodate any freezing.