Perry,
I would recommend Highway 64 through/from Chattanooga into the Ocoee River area to North Carolina to Hayesville, NC. At Hayesville, past the Ingles, take 175/75 South to Hiawassee,Ga.
Once in Hiawassee, take a left on 76 at the McDonalds, travel South and East through town, you will then turn right and rejoin 17/75 to Helen.This 20 mile segment is as good as it gets!
As you go up the mountain toward Helen you will be afforded two lanes for about 6 miles that will have sections that are banked, use both lanes and enjoy. At the top of the mountain you will actually bisect the Appalachian Trail (Unicoi Gap, 3000 feet). Then its downhill all the way to Helen. This road is just a preview to what is available in this area, have a great trip see you when you arrive.
Vysoc