If you have a gray water tank you have another roof hole. If you get an awning you have holes at the edge of the roof. I would not skip the solar due to concerns about leaking, and I strongly recommend the solar.
If you are planning to use the microwave in the late fall in the NE US you will need to use your generator. You will probably also need the furnace which is an electricity hog.
I understand your concerns, but Escapes really are significantly different. If you are planning on driving under low trees and have the branches drag on the roof (and tear things off,) all bets are off. But short of that, checking a bit of calking every year or two should do it.