Day 7: You're staying over in Portsmouth then driving to Kennebunkport, Freeport, and then to Acadia. Do not take US Route 1, turnpike only for your schedule. Even at that, good luck. First, don't even think about taking a rig into Kennebunkport and stopping anywhere. It's a trafic jam with a car, and parking is almost impossible. If your family is anything like my wife, Freeport and LLBean is at least a half day experience. Then you've got about 4 hours at top speed to Acadia on the turnpike to Route 3, then Route 1. Doing this, if you can, you'll miss all of Route 1 and all that it has to offer. Then it's a long way from Acadia to the White Mountains.
I don't blame you for wanting to see all of this, but personally I'd see less area and see it all better.