Don't think i'm gonna fare too well with a stupid PD.
Most PD's are just overworked, not stupid.
In any event, my understanding is that it is common practice in Florida for a first offense possession of a small amount of cocaine (i.e. personal usage) that the defendant is offered a pretrial diversion program. This would be 9 months of rehab, etc. and upon successful completion of the program the charges would be dropped. You would also be eligible to have your record expunged.
If you go to trial and lose, you could face a combination of 5 years probation, 5 years of jail, and up to $5,000 in fines. You would also have a felony conviction (3rd degree felony) on your record. And, as icing on the cake, DMV would suspend your license for 2 years.
I would strongly suggest you speak with the PD if you cannot afford a private attorney.