Thanks for everyone's advice. I think I'll change my trip to focus on Maine this time. NH/RI is doable for a weekend trip. ME is not.
Day 1 (Sunday)
Depart early PM. (Earliest I could do.)
Drive to Portland, ME.
Stay at ???.
Day 2 (Monday)
US 1 to Acadia NP.
Half day in Acadia NP.
Stay in Bar Harbor, ME.
Day 3 (Tuesday)
Half day in Acadia NP.
Drive to Providence, RI.
Stay at Hilton Providence.
Day 4 (Wednesday)
Depart early AM.
Back in PHL early PM. (Class)
Better?