OK, that's the answer. we just need to backtrack to Lubec and cross there. We might make it, depending on the time, and how much the ferries cost. From what we are reading, they are generally not cheap.

Latbrat, my wife was really wanting to see those mansions, but I know from past vacations, if you attempt too much, you don't really get enough time to enjoy anything. Maybe we will take a another trip to do Boston sometime, and we can do Newport then.

Breeze, wish I had posted the original question and gotten your comment sooner. Unfortunately we are pretty much locked into lodging agreements now, and don't have much flexibility in where we stay. So we pretty much have to do South first. But I will take a look at that north route through White Mountain.

Incidentally, we are staying from Saturday to Saturday, so basically 8 days.