While you're are frame-up stage, run your cables to all locations where you think you could put cameras ie. all corners. So, each corner area would have two cables (two potential cameras) and some would say add an extra for the 'just in case' scenario. Cable is cheap and if you can do it yourself there wouldn't be any labour cost. It doesn't mean you have to put cameras in all those locations, but it's nice knowing that it wouldn't be a major job to do so. Also, you may want to think about future LPR requirements, again, run a cable(s) to a lower location(s), which later could become an external data point(s) for cameras that maybe installed in a letterbox or camouflaged location at the front of your property. Before any concrete goes down, lay some conduit with draw string, should you want to pull cables and wires months, years down the track. I mention all this is because that is what I did for my house build, and it certainly made things easier.
Did I mention that cable is cheap.