I want to take photographs of animals at night and am planning on setting up my camera on a tripod with flash next to a path frequently used by animals. The idea is for something to come along, trip the switch and fire the camera. I want to be able to set it up, go away and leave the camera, then come back to it the following morning. I have never done anything like this before so could someone please tell me what I need? Do I need the LC3/LC4 wireless remote controller?