Hey bud,

By organic amendments I mean anything that will compost. I am right next to you in Alabama and I have also done this in GA so I know your soil type. I suggest the following:
First turn the soil completely and remove rocks sticks roots etc. Second add some leaves, dead grass, pine straw or whatever is on the ground (no wood or sticks). Turn that in. Then add either strait peat moss or high grade plant mix at about 3/4 cubic feet per each bed of about 3X5 (holds two girls).
Turn that in. Next add about 5 Tbs of lime cause your soil is acidic. Next add a 1/2 dose of timed release ferts, Next addd 1.3 recomended rate of water crystals. Turn one more time. Cover with dead stuff sticks branches, etc. Come back at plant time and rake in one full dose of TR ferts. Pop em in. Water at plant time and 2,3 days later to get em started. Come back in 3 weeks to remove competing weeds and one more time about one month later. Must do all prep work at leat one month prior to plant time to give it all time to work. Water crystals are available at any plant shop, home depot, etc.

Good luck

bob