Timed lighting is good , although you can buy wall switches to do this
Lock internal doors and avoid complete open plan , even with an alarm some will run round to try and grab what they can
Some police say avoid locking doors as they break the frames and damage the doors , but that's not true if you have a decent alarm with internal Sounders , which a burglar doesn't want to stay around for long
Apart from that , alarm is better than cameras , and light switching is good , have someone do your bin bags if your away and so on
Also external security lights are 50/50 , but if they were linked to an alarm which flashed all of them also scares them lol