I generally recommend against doing a rent-to-own program. Every person is different, so it's your best judgment. Here are a couple of reasons:
There are not many sellers offering a rent-to-own program. They either want to sell as soon as possible, or simply don't want to rent the house. That leaves you with a small selection of homes. You may wind up picking a home you don't really like because it was one of the few available. The alternative: rent until you're ready to buy. You'll have a much greater selection of homes to choose from.
Secondly, you as the tenant risk a good bit. You have to trust that the owner is going to follow through on his/her promises to either contribute to your down payment, or to provide other things requested in the contract. The owner may not do any major work on the house like replacing a roof, because he/she knows you'll be buying it and it will be your problem then.
Finally, you may still not be able to buy a home. If you have a major medical issue, or a job loss, then you've probably paid an option to buy the home, or have paid extra on rent to be able to have the lease-purchase deal. Unfortunately, that means you will have lost that investment if you still cannot buy the home. The owner keeps those fees; they aren't refundable.
Again, these are general issues, and may not apply. But, I generally recommend renting a place that you like for a few years, and set up a special savings account to put in money toward your home purchase. You'll also be surprised how easy it is to get a home loan, even with moderate credit issues. Georgia provides down payment assistance through a special program as well.
Best of luck!