Hi,
We are transplanted NJers, moved to PA. Still get the "Jersey Drivers" harrassment from those who know we are from Jowysey !
Anyway, driving down many times from NJ, and from PA. The Savanna exits in Georgia looks to be the most popular option, I have been reading. Agree with the exit 104 hotels. We booked a Springhill Suites (by Marriott), at exit 104 Savanna for $79. night. Includes wifi, and breakfast. Its also a "suite" hotel, with 2 queen beds and a living room with a pull out sofabed. Easy on/off from exit 104, lots of restaurants, and looks like a safe area I have heard.
We are driving down, planning on spending the night in Savanna, then only a few (4?) more hours to WDW the next morning.
This link may help with your planning...........
http://www.i95exitguide.com/index.php
Good luck..........
Syndrome