I would just drive. It takes almost as long to fly--I kid you not. I drove from the Orlando area to Atlanta in about six hours. Now I live about half an hour closer to Atlanta from WDW, and I went to near Harts Field so the south side, but still, by the time you drive to the airport and unload, get to the airport two hours before your flight, take the approximately one hour flight, get off and collect your bags, wait for a rental car or DME, and drive to WDW, it's probably going to be at least five hours. So for an extra hour or two, you can save a boatload of coinage.
Anne