I would like to mount the cameras on the exterior of the house. I want to moniter anyone around the perimeter of the house to about 80-120 feet out from the house. Our house was broken into and the thief was casing our place before they broke in, and we could not catch them. So, I want to prevent that from happening again. The lighting at night time is not very good, I am using those sodium vapor yard lights (one at each end of the house). As far as the DVR, I think I will go with an embedded DVR networked back to my PC. I could also build a new computer dedicated to the surveillance system. I not sure how that will work so I am open to suggestions on any part of the system. Thank You.