Any of those will work, Snellville is about 1 hr if traffic is ok, it traffic is bad then through another 30-45 mins on top.
If you are renting a car check your map routes carefully, don't go straight through downtown, it is likely to be faster to take I-285 around the perimeter and then head East on Highway 78 for the least headache.
Good Luck in Snellville, where I understand "Everybody is Somebody!"