Your desire to put up cameras in your office in the areas you have stated are completely approproate and lawful in my opinion.
There certainly are practical reasons to want to have such a camera for protection. Different states have different laws about "recording" others. I imagine that whether or not the camera will be open and visible to those being recorded (or whether there is a prominent and posted notice) will play a big part in the analysis. Typically, relevant laws address hidden cameras and sound recording without consent. I am not licensed to practice law in Florida. I would seek counsel from a Florida attorney to ensure that, your intended use is permissible under Florida law and I would also seek counsel to ensure that the use of the camera at the front desk does not violate HIPAA regulations as to patient privacy.
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