that is a lot of money and efforts for something I believe is not what will save you from an encounter of the deer kind
if the deer is already in your path as you approach , at night your speed should be low enough that you could swerve around it or better stop and shoo it away but most likely the deer is on the side of the road out of your field of vision and you cannot see with or without a night vision camera then as you approach, generally at the last second it get spooked and jump right in your path or close enough to cause an accident by then your camera will be useless
I live in deer country and I have seen this scenario countless time, but it is your time and money