If going to NH you should check out the North Conway area. The mountains are great and the auto route to the top of Mount Washington is a must do.
Saco River Campsite in North Conway is a great spot to stay while you are there. Close to restaurants, shopping and sight-seeing but very quiet with a river running along the length of the campround
Acadia in Maine - try the KOA Oceanfront. Pricey but many of the sites are oceanfront and most of the rest have an ocean view. Free trolly into Bar Harbour.
Enjoy your trip and safe travels!
