Welcome to NH.

Where to start?

It is true that all of New England is rough on cars durring the winter months. That being said the best option, if available, is to put the vehicle up for the winter. I do not drive my '72 in the winter although I did for one winter. I also do not drive my '01 Focus in the winet either but again I had no shoice but to drive it in 2 snow storms and a few nice but salty days. Saying that, I made sure I washed the car (underside mostly) as often as I could. The Focus is not show room clean underneith but it's a lot better than other cars 1/2 its age.
If you can afford it and get it pass the wife's seal of approval I would get a house with a garage to put the truck in for the winter. I have a garage tent I keep the Focus in over the winter and know it's not protecting it as well as a perminate structure can.

I would say the truck should not be driven from mid Nov to mid March.

Keep us informed on the move