I would highly consider waiting to do some research for this. It is not "poke me with some shyt and im jump on stage" youll embarass yourself.
It is time consuming, tedious, delicate and most of all, all about details.
First you need to consider your physique. Comapre to other people and BE HONEST with yourself. What needs to be brought up, BF%, etc.
NExt decide how you need to eat. Less carbs, more, greens,
Workout routine needs to be solid. Cover all areas and consistant.
THEN start searching AAS and whteer else interest you. Its not simple. Make a big showing and dont come back when people expect you and youll be laughed at. Respect the drugs not for what they do but who they can make you as long as you are responsible.
Post pics if you want and maybe get some more opinions.
That show is fairly reputable too. Happen to know, your current BF%, how many weeks out you are, Goal BF%, When youll start cutting? until you know those, i would worry about gear.
Im STILL trying to time my first show. I planned April but dont think itll happen. So now i plan for september.
EDIT: Why are you doing a Florida show? Why not do something close first, midwest is lightly competitive and alot of shows. Im in Chicagoland.