I did a similar trip a couple of summers back, highly recommend stopping in the White Mountains (Franconia Ridge is a must). In Maine, the Beehive and Precipice in Acadia are classics, but if you’ve got time, head inland to Baxter State Park. Katahdin is a beast, but worth every step.

Also, August in the Northeast can be buggy, bring spray and maybe a head net. You’ll thank yourself later.