i am going to be doing a live stream of a snowmobile drag race. I wanted to connect a gopro to a snowmobile and use light bridge to wireless downlink to my broadcast switcher. Is this something that can work is I connect a battery to the Transmitter side? Just basically wonder is this a good wireless solution to use off a drone (on ronin-m, gopro's, and DSLR cameras) to use a HD feed?

It should work, but you need to keep it dry and I would buy the antenna extension cables so it's easier to mount and keep the antennas up as high as you can

The antennas aren't diversity either so don't place them like they are. Mount both of the antennas vertically about 3 to 6 in apart I would think That would give you the best results