I think you'd be better off getting a camera that's intended for constant power and is actually designed to be hooked up to a monitor. The GoPro (I have the Hero 3 Black and love it) is designed to be a stand alone unit that records on it's SD card/Internal memory. You can monitor wirelessly through an app, but I don't think it can be wired to a monitor easily. And unless they've changed something between the Hero 3 and the Hero 4, it's not setup to have constant power running to it like you would need in your potential application.