Alright so I'm jumping into paracord and want to make two dog collars. Now, I'm going to need a bit of rope. For the smaller dog I'm going to do the King Cobra to make it fairly thick. The other dog is a great white behemoth and has a twenty-inch neck (His current collar is set to twenty inches) and weighs around a hundred pounds. For him I was going to go a little crazy and weave a double King Cobra (as in two king cobras knotted together. Instructions here: http://paracordprojectsguide.com/how-to-make-a-paracord-dog-collar/ Second video.) Big dog with a big collar. He needs a handle. About how much paracord will I need? Smaller (relatively) dog is going to need a 14.5 inch collar (I measured her collar without the length of the buckle.) Also what size buckle will I need for these?