I suggest you combine a Adirondack/Vermont loop that is easily doable in 3 days. First night Lake George. Then over to Vermont to do a four hour loop. To get there from Lake George, go north on 9N to the Chimney Point Vermont free ferry crossing. Then go north east on 17 to 100. You then go south on 100 until you reach 125. From there you take 125 west back to your point of origin at Chimney Point. This route takes you into the highest twistiest elevations in Vermont. I would then head north west into Adirondack Park towards Lake Placid where you could climb Whiteface and explore surrounding roads before heading home westward on 3 out of Lake Placid.
Smuggler's Notch in Stowe.