I just completed my stress and rescue course and weighting seems to be a major concern for most divers. Our basic OW we did not spend much time with the instructor trying to find the right weighting. We looked for what would get us down fot the check out dives. One year and many pounds lighter, LOL, not off my hips and thighs, I still have to adjust for the various conditions in which I dive. Moral of this story, how much weight is going to vary with wetsuits, steel vs alumunium tanks, and the water you are in, fresh or salt water. Oh yes, how heavy the salt water is also will affect your bouyancy factor. Be sure you write down what works and what does not so in future dives you can refer to that for making your decision.