I've just started working with paracord to make dog products. I've done a a couple collars and want to do a leash for a friend. The leash I have in mind is a police lead. It is supposed to be 8' long with a bolt snap on each end, 2 fixed D-rings and a floating O-ring. I plan on doing a King cobra weave with 550 cord and I'm having trouble figuring out how much cord I will need. I did a 10" buckle collar with 325 and used 21' of cord but not sure how that will translate into 96" leash with two cords (two colors). Would 100' of cord in each color be enough? The leash (and a matching martingale) are for a 90lb Labraidiot. Super friendly, young, and no concept of self-control or personal space.