I will confer with the boss (wife) on the dates if FLRider thinks they will work for him.
As for parking a car at Neel's, there is a lot a little north of there but I hear it fills quickly on the weekend. The other option is to get a shuttle from Neel's back to Amacolola Falls. I don't think you can park at Mountain Crossings at Neel's Gap.
The parking near Neels is at the Byron Reece Trailhead. http://www.georgiatrails.com/gt/Byro...e_Access_Trail
We could meet at this parking lot early Sunday morning and catch a shuttle back to Springer.