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