Adam 9- Flameport might 'just' have done what you intended many 100's of times, in real life.
Yes, maybe the comms is a bit prickly, but do consider what he says. The whole idea of CCTV is provension (a dummy camera works as well as a sh1te one), filming and evidence gathering in a reasonable resolution preferably with water marking of event time and date.
If your going to do it, then do it well and the installation takes no more effort be the camera a £30 item or a £300. As for IP, the single lead powered ones where you need a small hub to send the power to the camera are without doubt the best way to retain a working powered up unit 24/7 x 365.
Some things are best done well.
I've heard tell of people with main meter boxes that are external simply having the suppliers fuse pulled pre doing their nasty work- where's your suppliers intake ?
Have you considered double point, so one camera can cover the other and avoid the dead zones a single unit affords ?
Have you discussed the work with the council and the police safety teams for positioning, and legality (if showing a public path or road side).
They can also confirm model types and functions that are useable should a bad deed be caught on camera. I believe the water mark requirement is essential in most areas.
Off site storage is prudent, what would happen if the nicked the pc that the ip cam connects to ?
Anyway, please wind your neck in and accept that even if some charm was missed from responses, they are still valid.