In your route you are not going to cross any class B (the Miami B is a few miles south if the chart I have here is current).
As suggested the best thing to do in my opinion would be to ask for flight following with the ground or tower frequency ("N-1234, type C172/G request flight following to KBCT, requested altitude xxxx feet").
You will get your transponder code and you will be given the frequency of the approach controller to contact after departure, and will be vectored by app if necessary. You may be given a block altitude (ex: maintain 6000 ft or below).
You will likely get the direct route.