A gen 1+ monocle would be the best, the higher gens will run anywhere from $400- $3000 dollars, it is completely up to you on which way you go. If you find a model you think would work, YouTube it and see what people have to say about it. A monocle will allow for you to quickly switch between NV and no regular line of sight. A monocle will severely limit your field of view but a two eye set up would fix that issue. You will most likely want to run a helmet that you can mount it on. Help that helps.
"Greater love has no man than this, that he would lay down his life for his friends." -John 15:13