Warning! Anything along the east coast in the late summer, or after Labor Day can be a literal nightmare with everyone heading for the beaches: Freeport, ME, Cape Cod, MA, Rehoboth, DE, Ocean City, MD, etc. If you only have five days, you'll be treading water for the first three or four and trying to make up for lost time in just one or two days.
Here's a counter offer:
1. Head west from VT through the Adirondacks and pick up I-81 south. Yes, I know, you'll be slabbing it on four lanes, but hear me out.
2. Near Harrisburg, PA pick up Route 15 south into Maryland. Take Route 340 to Harpers Ferry and work your way toward Winchester, VA, I-81 and the Shenandoah Valley.
3. If I-81 starts to get boring, head east and travel south on the Skyline Drive which connects to the Blue Ridge Parkway. The Blue Ridge Parkway will take you all the way to Asheville, NC and you'll be knocking on the Dragon's Doorstep. I realize the Drive and Parkway are limited as to speed, but there is no commercial traffic and no 18-wheelers. Plus, the scenery is pretty fantastic.
4. From the Dragon, take Route 28 to Franklin, NC (It's sometimes called "The Hellbender.")
5. In Franklin, NC head south to Rabin Gap and have breakfast at the Dillard House. Warning! Do not eat dinner the night before. Then wend your way to Atlanta.
A tentative agenda.
Day 1 - Killington to the NY/PA border.
Day 2 - NY/PA border to Maryland, West Virginia, or Virginia.
Day 3 - Asheville, NC
Day 4 - The Dragon and then Franklin, NC
Day 5 - Breakfast at the Dillard House and then on to Atlanta.
No matter which route you take, see enough to say you were there and leave enough unseen so you have to come back. Have a great trip!