You didn't mention anything about winterizing the plumbing system, a must.
I agree about the sta-bil, there is one made specifically for diesel.
If it's plugged in you shouldn't need to isolate the batteries but if they are the flooded type you should check on them, perhaps after the 1st 30 days, perhaps sooner, to make sure they are not loosing water or top them off if they are.
I'd also suggest some kind or rodent repellant. For the basement compartments nothing will beat moth balls. I used to buy a box of those and a package of women's shear "socks" - you know the ones they'll wear under slacks so it looks like they have nylons on, but they're only as high as socks. Put half a dozen or so of the moth balls in each, tie them off and distribute throughout the basement, perhaps on top of the generator and a few in the engine compartment.
You don't want to use the mothballs in the "house". For the house I'd recommend a product called "Cab Fresh". This was originally designed to keep critters out of farm equipment that would sit unused for months at a time and it has a pleasant smell. You can buy it on-line or in one of the farm supply stores, such as Tractor Supply, Fleet Farm or Farm and Fleet.
Lastly, keep saving your pesos toward retirement. The best way to "winterize" is driving it south for the winter.