Padlin has it right, and the other posters concerns about too ambitious an itinerary are right on.
Your campground selections are fine, but I also would keep it to Mystic Seaport area, Boston, Acadia National Park, and White Mountain area.
Mystic seaport, a great take on foot, In Boston, a Duckboat Tour and again explore on foot, Acadia great for camping, biking and hiking. I would forget Bretton Woods, drive and camp on the Kangamangus Highway and explore all the neat natural attractions, plus enjoy North Conway and maybe a scenic train ride, or head over to the Cog Railway if thats a must.