I lived in the Atlanta area for more than 10 years and still have family there so we come back often. Atlanta on the weekend is no problem unless there is a game, otherwise straight through would be my recommendation. If you are there on a weekday, you have to be extremely early, before 6am, between 10am and 3pm, or late, after 9-10pm, and go around on 285. If you follow those general rules you will have no problem unless there is an accident and that could happen anywhere. We do it all the time with our 45' rig towing a pickup truck, 65' all together. JMO, but you are worrying too much about it, especially on a weekend.