Great Southwest Parkway is south of I-20 and west of I-285. Kennesaw would be a LONG drive. For similar areas to Kennesaw, I would suggest looking in the west Marietta - Hiram - Powder Springs area. The major north/south road to travel from the Marietta - Hiram - Powder Springs area down to Great Southwest Parkway would be Camp Creek Parkway (also named Thornton Road and C H James Parkway). This is the way we use to get to the Atlanta Airport. Busy road in rush hour but not nearly as bad as others in the Atlanta area. Just go to Yahoo.com, and click on MAPS. Enter Great Southwest Parkway and Atlanta, GA. You will see Camp Creek Parkway. Click on the CITY view and follow Camp Creek - Thornton - C H James Parkway up north and you will get to some of the areas I would suggest. Kennesaw looks fairly close on the map, but there is not an easy way to get to Camp Creek Parkway from there without a lot of windshield time in rush hour. By the way, I live in Acworth which is between Kennesaw and Powder Springs. All great places to live in Cobb County, which is know nationally for its school system.
Good Luck ! Jim