Great suggestions from everyone. Thank you so much for taking the time to comment.

Kancamagus it is then. From what I can tell from the map, that is the southern route through the White Mountain National Forest.

So I'm definitely adding Camden and Ogunquit to the itinerary. As for Boothbay Harbor, we actually considered staying there for a night or two before arriving at our final locations. Newport may be a little stretch, only because we were trying to stay close to the coast most of time, and it's a long coast. But I'll keep that one in mind too.

SandyAndBill, thanks for the link. Lots of things to consider there.