You badly need a lawyer and you badly need to stop talking about what you did in public. That means stop posting online and stop talking to friends or family. Speak only to your lawyer. You are in serious trouble.
You need to speak with an attorney as soon as possible. You are facing serious charges and could spend time in juvenile detention. Do not talk about the issues with anyone else. Anyone you talk to about your case, except your attorney, can be forced to testify against you (even your parents in some cases).
By responding to questions on AVVO does not establish an attorney-client relationship between the questioner and Garrett Law Group, PLC. Responses should be considered and used for informational purposes only. Every case is unique in its facts, and all legal matters should be discussed with a licensed attorney prior to making any decisions or taking any actions.
Grand Theft is a 3rd Degree Felony, punishable by up to five years of supervision and some period of detention (the juvenile equivalent of jail). As a first offense, you should be given the benefit of a more lenient sentence, assuming that the State can actually prove the charges. There are many defenses that could be explored, so I would not assume that you should enter a plea. There's also a chance that the State may be willing to send your case through the Teen Court program, or another comparable diversion process that would allow you to earn a dismissal of the charge. There is a common misconception out there that juvenile offenses simply disappear after your 18th birthday. In Florida, this is absolutely false. Do not make a mistake that will result in a felony record. Talk to your family, pool your resources and hire the best juvenile attorney you can afford to help you. I do not take juvy cases in Tampa, but there are a number of well-qualified lawyers on avvo that do. I suggest you seek out their advice and agree that you should not post admissions or other facts anywhere on line.
Best of Luck!
Posting an answer to your question does not create an attorney / client relationship such that you can or should rely on the information provided herein to take action. Instead, it is intended to simply provide you with information. I am not your lawyer and cannot provide you with legal advice unless and until I am hired to do so.