Just to confirm, my weight requirements are about the same as yours for wet diving. I looked at my notes, looks like I used 28 lbs for my first wet dives in class, but that is always over weighted. I haven't dove around here wet since I first learned. With my drysuit when I was first learning I used 34 lbs and a steel 119. Since then, I have dropped it down to 26 lbs as I learned to better manage and streamline my rig.
So, when I was first learning wet I was diving a jacket style bcd, 28 lbs, 7mm farmer john on an al 80.
I added a drysuit and went to about 34 lbs to 38 when I was using ankle weights, got my own steel 119 tank.
Now, I am diving a DSS Torus wing (sounds like the same one you have) with an AL backplate on a Scubapro XTec harness. I use a DUI weight harness. Still drysuit, with lots of lofty undergarments because I hate being cold, neoprene socks and overshoes. Steel 119 tank. If I go to fresh water, I usually take 6 lbs off and that seems about right. If I go to an AL 80 tank then I add about 6 lbs to compensate for positive buoyancy of the tank at the end.
I don't know if that helps, but I thought it might be useful to you. The DSS guy, Tobin, is an expert on weighting. Don't hesitate to call them and ask for some advice too, when I called I got more info than I remember now, but he was a great wealth of knowledge!
Now, if I could just take 26 lbs off my ass as easily as it comes off of my harness!