If you're coming all this way, you can't leave without stopping at Keepsake Quilting. Allow a lot of time to wander aimlessly before you get your senses back enough to actually shop. It's only 36 miles from Lincoln.
And, I have to tell you, you've picked a super week to come. I was up in Lebanon, NH (VT border) this morning and the trees are going to be prime in no time at all. It's gorgeous already and is only going to get better! Have a safe and happy trip.
ETA: This is NH specific, but ME and VT tourism probably have similar foliage report pages.
http://www.visitnh.gov/4-seasons/fal...mountains.aspx