3.5% down is still possible from FHA as long as you have a steady job for several years and don't mind the pile of fees you get. I looked into one and the PMI was probably 1/2 that of putting 10% down on a conventional 30 yr but about another 5-7k in up front costs that are rolled into the loan.
You just have to be buying in a building that's qualified for FHA loans (either a resale or over 70% sold building) and jump through all their regulatory hoops. Beyond that if it works for you, do it. For me it made more sense to put down a full 20% and skip all the hassle and enjoy my 3 figure mortgage payment.
I would look into downpayment assistance programs that Atlanta has:
ADA - Atlanta Development Authority - Mortgage Programs
The income limits (72k for some) are reasonable and it works as a 0% second mortgage. It can move you out of PMI if you qualify.