Hi,
I have read your very ambitious itinerary for your first day in New England. You arrive @ Logan, get bags and car, and head to Providence 53 miles away. Given the time you get started, this could take anywhere from an hour to 1 1/2 hours. I don't know what a quick tour is, but lets say you never leave the car, gives you an hour before heading to Cabot VT. which is over 250 miles north. If lucky, you can get there in 4 hours. A tour of the Maple Farm might take you another hour before heading to Littleton, NH to your hotel. Littleton is 40 miles from Cabot. Lets give you another hour for this trip.
So, the first day, you have traveled over 340 miles, and been in the car for at least 7 hours. (not including any stops) That does not include a "side trip" to Newport, RI, that would add another hour if you never got out of the car. That is a lot in one day.