We're planning a 2-month (? - retired with no commitments) loop tour from Sacramento, across to and up/down the eastern coast, including parts of southern Canada. We've done the Southwest and up the w...
If you are going up the east coast don't forget Acadia in Maine, and if you are that close to Price Edward Island, I would highly recommend it too. Hopewell Rocks is great too in New Brunswick. Consider Cape Bretton Island, in NS.
Also if you go to Nova Scotia get some good local maps at the welcome center and a GPS would be good. Unless you like getting lost in NS.