It's only a 12 hour drive to go straight through if you time it right. Get the car packed and get to bed early the night before and leave at 4:00 am. You'll be in WDW in time for dinner.
Use the Richmond bypass and the only place you'll need to worry about traffic is J'Ville.
If you do absolutely want to stop for the night, Richmond Hill, GA is a good place. There's a clean, safe Hampton Inn just off I-95.
Anne