jamal dog
you did well to ignore the snub-like remarks about your financial status (keep your eyes on the prize)
however be aware that the money needed for training/class and the time are requisites to make it harder to acquire. if you don't have the right conditions worked out at home you'll have problems getting it (stable home address for sure, no people around that have drug/alcohol offenses, felons, etcetera).
florida is pro-gun (remember marion hammer got the concealed licensing ball rolling from florida to the other coast and everywhere in between) but I doubt public transit allows it-- just remember that you have to get caught, then the prosecution has to believe they can win a case against your offense, then they have to beat you. Don't get caught, don't do anything negligent or politically incorrect, articulate your reasoning and do it with poise to show them you are going to fight in court if they take you. that stops most stuff right there
that said know the law so you can stay on the right side of it, it's not the actions you take, but the way you present them in court that matter. I'm not telling you to do it but it's a free country and you not only have the right to arms but freedom from search and seizure-- there is no common sense regulation, only strict interpretation, period. the constitution says what it says.