Easy, except that it's an overnight trip at Cabot Cabin. Or out and back in a day with about 10 miles. Actually, the trail guide indicates that Bunnell Notch Trail is rough and poorly marked. We might be better off with the Mount Cabot trail, out and back.
I think we're better off hiking in to Unknown Pond and staying the night. Then going out and back to Cabot without big packs.
Unknown Pond Trail
To Cabot from Unknown Pond