What are you going to do with this big blade? That makes a little difference in what some might recommend. A good quality 12' machete is pretty handy, they even used to be called by some the "world wide survival tool." You have to be careful with hard woods, the blades are pretty soft, and the edge can roll on you, but any rolls or nicks can be easily corrected with a file. They can be easily sharpened to hair shaving sharpness, and will do just about anything one might ask of a blade. Best of all, they cost little, so you can have them stashed all over the place.
As for headlamps, there are a jillion out there. I have some of the Energizers too, but only use them for close up work (like reading in bed), they don't put out enough light for my old eyes to walk around with them. While bigger and heaver than many, the
Petzel Duo is slick. It has multi-LED's to save the batteries, and a halogen bulb for long distance lighting. You will see them used by many SAR team members...