This site i found very interesting. It shared just about every detail about self defence laws and when certain force can be used for any given level of danger.
Is it self defence if you strike first? In some situations yes it is. It is talked about on this web site, how if the situation reaches a point where violence is the only answer it could be best to have the upper hand.
This site is a florida Q and A on everything u need to know about concealing a weapon and if u need to use it in self defence, how to do so within the law so that you are protected.