Do you have any previous experience with drones? The problem you're going to run into with drones, especially at 45mph, is there is a degrading of the image and a lag in the image because the signal is transmitted from the drone to the remote. This problem is present even without a thermal camera attached. I can only guess that once you attach a thermal camera that can only process at 30Hz, that the image is not going to be that impressive at that speed.