Coming from CT, I would probably get to the Kanc via the bright blue route below. Once you get past Springfield, MA, 91 is pretty scenic. When you get off 91 and head towards Lincoln, NH, Rt.112 is very scenic as well. Lincoln and the Kanc can be a real clusterf*ck during foliage season. On the other side, Conway, NH will be a madhouse. In terms of timing, I've always thought the last weekend of September is a solid bet. My wedding anniversary is September 29th and it usually pretty decent around then.