If I was finishing on Cabot, I'd opt for the mill brook approach mentioned above. My preference would be to do it as a day-hike & then stay in town so I could celebrate with a few cold ones.
Some beer or champagne at the Cabot Cabin would be nice also. Unknown Pond is a nice destination, you could go in, set-up camp early & leave the heavy stuff & then hit the peaks.
Congratulations in advance....