If I may toss my 2.5 cents in to the ring,,, If you have a tiller ( I did a lot of gardening back in the day when we had the greenhouses) I wouldn't even worry about the plow, the tiller will work well you just have to make several passes, dropping a little deeper with each one until you get to get the depth you want.
Your in Georgia so its probably that red clay, a real bytch when it's dry I bet.
The tiller will let you find the rocks and hard pan and work the dirt up, and you will also be able to start working in lime and fertilizer sooner,,
Which is something else I would recommend find your county agent or state farm office and get the soil checked to see what,, if any thing,, you might need as far as supplements, lime, acid, what ever and go from there. When I checked mine they had a hard time believing I need 9000 pounds of lime per acker, I did that over several years,,lol
This will save you a ton of disappointment when you put a lot of hard work in to a garden and get nada out of it .