It's doable, but you'd want to test the setup you plan to use on the ground first to see about the actual range and quality that you can see with that. Those things sitting still on the ground where there are objects for the IR to reflect off of is one thing, strapped to a P2 100ft up where there is noting but air, that's something completely different. You'd want to test how the P2 lighting will affect the camera, as they may need to be masked which could make keeping track of it more difficult farther away for LOS flight in the dark. The power requirements of everything should be figured out, as well as how the video really looks when moving it all around on the ground in the dark before strapping it all onto your P2 and sending it up into the blackness to just be dead weight or only catch the ground, tree or whatever solid object a few feet before the crash happens.