Before you blow a load of cash bear in mind that CCTV won’t make your stuff more secure, won’t improve your chances of recovery, and won’t help the police catch the thieves. All it does is provide evidence if the police happen to catch someone – they don’t actively seek to find criminals like on TV these days!
It will give you some peace of mind from a certain perspective, in that you can check when away. Of course, all that really does is feed the paranoia so you’ll check more often and possibly become obsessive.
The only way to protect your babies is with locks and insurance, and locks can be cut easily with modern tools!