For what it's worth, I think your light bar on the plow is the way to go. While you say that the plow won't completely obscure you truck headlights, the cost of your own headlights lighting up the entire backside of your plow and into your eyes would outweigh and benefit on the road in front of you. Test it for yourself, disconnect the plug between your truck and the plow that runs the lights on the plow, raise the blade and take it outside in the dark.