Awesome trip!! We did the same route 2 summers ago except using the huts the whole way (and a Presi traverse with the huts the summer before). Franconia to Crawford is just a wonderful route regardless of where you spend your nights (although your version sounds pretty perfect). Glad you and your son both had such a great time. It will definitely be something that stays with you for a lifetime! And now that this trip is under your belt there are countless more just waiting...