There’s a little section of the BR that goes through the eastern panhandle. Worth seeing!
Yes. The VA/WV line more or less follows the “summit” of the Blue Ridge. Eons ago, I looked at property on the WV side up on the mountain; ended up not buying “for reasons”.
Harper's Ferry is on the Potomac at the extreme eastern part of WV. The bridge over the Potomac River there is part of the Appalachian Trail (the only part of the Appalachian Trail I have walked).