Just a few questions about the Grayson Highlands section of the AT :

Best points of entry/exit for a 4-5 day hike?
Best place to park a car for a few days? (Would prefer to leave my car at the exit point)
Good shuttle service? (To get to entry point)
What's the weather like in that area in July and August? (Hot? Very hot? Killer hot?)

Thanks !!!