You are on the gulf coast of Florida, check the surf report:
https://www.swellinfo.com/surf-forecast ... rg-floridaAnkle high waves to choppy waist high waves at best this week.
I would recommend a 9' all-rounder longboard with a 2+1 fin setup. If you don't want to commit a lot of cash to a board type you are not fond of, buy a used wavestorm for under $100 and sell it for the same price when you are ready to move on. I imagine that as a teenager you desire to surf more like Gabe Medina rather than Joel Tudor and you will want to get a short fat grovellor, don't do it.
Anything smaller than a longboard you will struggle to catch waves unless there is a tropical storm nearby. Getting a shortboard or funboard means you might only only have surfable waves once or twice a month depending on the season, vs double or triple surfable days on a longboard. Its hard to learn to surf if you are bobbing in the water not catching waves.
You weigh 150lbs now but at your age you can gain more than 10lbs per year. Go too small now and you might get too heavy to surf it.