We will be driving from Boston (somerville) to Portland on a monday in September - as our hotel doesn't have check in till 4pm and we will have our 14 month old with us we were thinking of leaving after her morning nap (around 10 am) and stopping once or twice along the way once we got into maine - in say Kennebunkport or Ogunquit or old orchard beach - does it make sense to go off highway the whole way up through Maine (is it scenic and interesting) - where would be a nice place to stop for lunch? Have a walk around? Thank you!