Okay, so I am heading to the coast this weekend for some NC wreck diving. I just got a new 5mil for the colder water and I haven't had a chance to test it out. I last dove a month ago. I was wearing a 2mil shorty and w/ my BP/W I am approx 2lb negative at the end of the dive wearing no weight. I am wondering how much lead I will need to sink this new suit. I am guessing 6lbs (plus my extra 2, so a total of 8) will do the trick. It's a Mares 5mil w/ hood. Any thoughts?