I just began researching in hopes of purchasing an 8 channel 4 camera CCTV system under $1000. What specs should I look for to insure I get the best picture possible in order to identify individuals? Or could someone point me to an article or video showing what to look for in a system? I would think the most important thing would be the angle size of lens. I planned to mount 1 to 2 cameras on my garage looking down a 30ft driveway. I'm not that interested in seeing my front lawn off to the sides. I have an old DVR system now and all it does is allow me to view my property being robbed without the ability to make out faces, which is more frustrating than no video to begin with. After a little research I believe I want a Dahua NVR recorder with POE. I was thinking I should get Amcrest (unsure if completely compatible with Dahua) 4k cameras but not sure about that anymore because I can't find 4k cameras in the higher end manufacturers. Do I need to be concerned about the processor, record rate 200mbps vs 320mbps, bite rate per channel, etc?