You have a lot of money in your proposed to do list. Personally I'd skip most of it and apply the $ to the newest unit you could afford.
Even then you still may need tires and fluids changed. Tires check date code and tread wear.
But on you list I'd skip the tank cleaning, the generator work (do an oil change), the furnace maintenance (unless problems), the spark plugs (unless due by the book), and the rest of it only as needed or called for by Ford maintenance schedule. You'll have issues pop up that you don't anticipate. Hoses last much longer than they used to. I'd inspect them but not start thinking of replacement till 8 or 10 years unless obviously failing.
