I'm looking to get some weights to get me closer to neutral buoyancy for my two wetsuits I normally use. I'm a snorkeler who will be attempting at some underwater photography so I will have no other gear except for mask, snorkel, fins/booties, wetsuit, camera, and weights/belt. My two suits are: 5/4mm Bare Velocity Fullsuit 5mm Mares Trilastic Deluxe Core Warmer How much weight do you think I should have for each suit? What size combination of weights should I buy? Thanks!!