Shuttling Around Gorham, NH - and itinerary advice?

[dontezuma]

My family and I are starting a section hike in Gorham, NH next Friday. We arrive in Gorham Thursday afternoon and my plan was to drive our car to the trail intersection at Andover Road betweekn Upton, ME and Andover, ME:
https://www.google.com/maps/place/Du...4d-122.1721988

Does anyone know of a good method of getting a ride back from there to Gorham?

And is it easy to hail a ride for 4 from Gorham to the bridge trailhead?

Finally, for a 6-day excursion (5 nights) leaving from Gorham, is it reasonable to expect to get to that spot, or should we plan on stopping at Grafton Notch? We're a fairly fit family with teenaged kids, so I'm only mildly scared by the reports of how tough the Mahoosucs are, but I'd like to build in a little margin of error.

We're looking at 6 miles a day on average, I think, given our intinerary, so I think that's fairly easily doable, but we've never been on this section of the trial, so looking for a gut check on that.

Thanks in advance!

The Smiths