As you can see by this attachment (http://www.yankeefoliage.com/peak-foliage-forecast-map/ ) the peak color season is fairly early. That two week period is to be avoided like the plague. The busloads of tourists preclude and decent accommodations and the usually good New England small town eateries are squeezed full.
I'd wait until October 1st or so. The colors are still as vibrant and the tourists are long gone. We've gone as late as Thanksgiving week (3rd Thursday in November) and still enjoyed i immensely (we live in the US).
Boston is a good starting point thence northward to either Portland Maine or Freeport Maine (a small town just 24 miles further that Portland and home of L.L. Bean (seen here:
http://www.llbean.com/?&qs=3085166_GOOGLE&cvosrc=ppc.google.ll.bean&cvo_crid=95351996457&Matchtype=e&gclid=CPHp1fnxjs4CFUro6QodyUMCkw&gclsrc=ds ) is a nice drive with two or three excursions down peninsulas to the Atlantic to photograph the myriads of lighthouses such as the Portland Head Light here:
https://portlandheadlight.com , shouldn't be missed.
We then travel north through the State of Maine along the Androscoggin River takes an entire day, but the scenery is magnificent. Prepare your self for the unique accent of the "Mainers" pure pleasure!
We usually turn west and tour the upper limits of New Hampshire and Vermont and back down the Connecticut River during which you can spend as much time as you'd like touring at least three mountain ranges, including the highest peak in the U.S. wast of the Mississippi river, Mt. Washington. Bring a good jacket!
Welcome to the U.S., by the way...