Are you certain @ the GA connection? Many of the Bush Ancestors left VA after the Revolutionary WAr & obatined land in KY, OH.

My lines are in KY.

The DNA websites have many Bush results you can check too. Try ancestry.com One World Tree, http://freepages.genealogy.rootsweb.com/~cwbush/bushx.htm ;
http://www.personal.psu.edu/faculty/g/a/gah4/BushDNA/B1.html...; http://www.sallysfamilyplace.com/MapleLawn/bushwm.htm