It is all good, just keep in mind that you might have to carry it at some point, so you want to keep it as light as you can.

What to add? A bit of wire. The stainless snare wire is pretty good stuff, but the brass can be handy too.
It is light and easy to carry and has many more uses than just making snares.

You have some items that I don't understand, like restraints and a current sniffer.