Why was I not offered First Offenders Act Probation after appearing in court for a...

[tim]

...false Burglary charge? Me and my younger brother were both wrongfully charged with felony burglary. We stayed in jail 3 weeks until our preliminary court date. We both have never had a juvenile or adult record and never been arrested. But they only offered 1 year in prison 4 years probation for both me 19 and my younger brother 17. I need help on what to do they have no evidence they cant place us in the house and found no finger prints they only have a false witness statement. This all happened on Halloween and when we finally appeared in court the best we could do was reduce the bond from 40,000$ to 30,000$ plus tax. Now we are out on bond with ankle monitors until we go back to court which could be in 3 to 5 months or a year. What should I do to help our case? P.S we have public defenders... and this all was in Clayton County, GA