Well Mr Swagger,
Nite vision goggles can be pricey for good ones. I always believe in the K.I.S.S. principle. That becomes another gadget you have to fiddle with in the middle of the night. Another thing that "Mr Murphy" can mess with and now your well made plan is "Kerplunk Kerfueyyy". I like the idea of a hand held light or a rail mounted light but I believe you should get instruction on how to use it properly and effectively. Practice practice practice...
But wait your Bob Lee Swagger.... all you need is a rubber band and a paper clip and you can take him out at 100 yards with it