I hope you got your insurance in order before the break in. Thieves suck.
I rent a shop from my boss- 40X80, but as we are a steel company servicing Chicago we are not exactly in the best part of town. Ok the whole town sucks and we are in the worst of it. Our facility has been broken into at least once a year since I have worked there AND we have 24/7 security guards, 6' chain link fence with barbed wire as well as 4 DVRs and over 40 IR cameras. The rent is cheap though, and my building is close to the front gate where we have a guard 24/7. I still have my own security system- 4 cameras and DVR with battery backup. I have several cars in there as well as my Jeeps- but it is not a business. My tools are all locked up (in lockers, LOL) when I am not there. The DVR monitor is next to a dummy PC (the one I use to look up stuff when working in the shop, it hooked up to the same monitor via a swith box)... The actual DVR PC is locked in a steel box disguised as an electrical panel.
I mostly have my security system in case one of the 150+ employees decides to break in and steal stuff. The shop works 3 shifts so there are people coming and going all dayand night. I don't work on anything or sell anything- it is just my toy shop, but I do have probably $5k in tools and many times that in vehicles in there...
1994 Jeep YJ off road toy
1981 CJ7 SBC 350
2005 KJ Libertyt 4x4 CRD w/ 2.5" Frankenlift DD