Our building had a hardwired system installed, then we switched over to a wireless system only to uncover a huge number of technical difficulties (configuration/administration) and requirements (dedicated electrical, authentication, etc.). We called in a smart home company to assist us with the final tweaking but it costs us more than we anticipated. Are you storing to a computer hard disk? Are you accessing via the web or an internal network? Do you have a dedicated mechanical room or closet to securely store the equipment? If possible you should use IP style cameras, not wireless cameras.