The Lake George area of NY's Adirondacks is beautiful. Lake George RV park is our favorite place to stay. We've been there many times. Be sure to take a day trip up to Ft Ticonderoga.
NH try to route the trip so you can cross on Rt 112 (Kancamagnus hwy.) Stay in North Conway and take trips to White Mountain Nat'l forest. A trip to the top of Mt Washington will have to be on your bucket list. If you take the Mt Washington Cog Train, it will be an experience you won't forget. It's spectacular.
If you looking for the more scenic route through Maine take Rt 1. It hugs the coast and you go through some quaint Downeast villages. Bar Harbor is very beautiful, although it can be crowded. There are several places to stay there.
We stayed at Narrows II in Trenton. Close enough to visit the town and Acadia NP, but you can avoid a lot of the crowds.
If you have the time try to make a stop in Boothbay, Me. We love this town and there is so much to do there. Never crowded. A great place to stay is Shore Hills Campground and RV Park.
Good luck with your plans.
Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS