I bet you'll lighten up when you switch to a rig like this from a regular BC. 11 or 12 pounds of lead with a warm water set-up seems like an awful lot,especially for a guy.
I use about 6-8 pounds total, even when using an aluminum tank, if diving a 3 ml. I'm a slightly overweight, 48 year old woman. My BMI is 26 and I'm sure my body fat is in the low 30%.
Most guys tend to drop like a rock once they get comfortable in the water, at last in warm, fresh water. In salt water, not quite as much.
I bet your BC has a lot of inherent bouyancy that you haven't even been aware of. You may also be filling up your great big lungs with air, which is incredibly buoyant.
When you are just swimming in the pool and you exhale all your air, do you float or sink? I float and if I'm in salt water I hardly even need a life jacket. So, I'm sure you will require a lot less lead once you streamline your rig and relax.
The BP/W system is probably the best travel system there is. Light, easily packable. Especially if you get a kydex or aluminum plate with a plain, nylon ( hogarthian or DIR) harness. Check out the DSS packages.
All the extra padding does is give you more air pockets which requires more weight to sink. The simpler the rig the less weight you'll need.
Check out some of the weight pockets that can be used. I think DRIS carries some. Halcyon has some nice ones that you put on the waist belt, although they're more expensive. They're basically like having integrated weights, you can just dump the weight from the pockets if needed. I have them, and really like them, although they take a bit too much room on my waist, which I don't have a lot of.
I like to have most of my weight on my backplate and a small amount dumpable. In warm water, I don't really have any dumpable weight, since I can swim up with a short steel backplate, weighted STA ( total 8 pounds) and my AL 63. In cold water, I have to add another 8 pounds, plus use an HP 80 steel tank, so I use 8 pounds on my waist in the dumpable pockets by Halcyon.
i have two BP/ wings. One is DSS, the other is Halcyon. The DSS is an 18 pound wing, the Halcyon is a 30 pound wing. Both with short steel BP. The Halcyon has the Cinch Harness system, which I really like. Overall, I like the Halcyon a little better but they are both very, very nice. I like the DSS for travel and for a nice, warm water system.
I would never go back to any sort of regular BC again. I use my jacket BC in the pool, just to keep from messing up my good wings, but I really hate my jacket. It's just that my pool gear gets severely abused, sitting in the sun all the time, basically never even really rinsed off, because I dive it sometimes several times a day during the summer.
If you have any other questions, feel free to ask. I went through trying to make these decisions last summer and it was tough.