TL;DR: If trying to go forward legally is what you have decided to do, the first step you should take is to contact a lawyer for a consultation (many lawyers have free or nominal cost hour long consultations, that can give you a first step). You are absolutely going to need a lawyer if you go forward. If this "guy is coming from a very well know[n] and powerful family", then he is certainly going to have one.
The first thing is to understand is what "taking him to court" means, and for what you can do so for. You cannot bring him to court on charges of rape, as Florida does not allow private prosecutions. What you can to is:
Ask the local district attorney, etc. to prosecute him, and agree to give testimony. You can not force them to do anything, if they choose not to prosecute.
Pursue a lawsuit (a civil action) for a related tort, which would be something like (ANALIANAL), assault or infliction of emotional distress; a civil judgement would be probably be monetary only; there certainly would not be jail time. Rape is not a tort, it is a crime; it must be prosecuted by the state. To do this, you need to talk to a lawyer.