Thanks @mijostyn , that's good feedback. As you were you posting, I drew a scaled template of the 4P mounting base and broke out my UNI P2S tool. It turns out the 11 (or 9 or Safir) will fit on the back armboard--just barely. And because the plinth has a lot more area to the right than in front, the 11 would not hang the cartridge out over the edge if its mounted back there. Very interesting.... I have an Ortofon AS309S back there now for SPUs and like it well enough. But any of the Kuzmas would be a serious upgrade, I'm sure, and I can run SPUs on another turntable with my SME M2-12R. Plus, I'd keep the Graham on the Technics in the front position for daily drivers, etc.
So you like the 9 more than the 11? You don't miss the easy VTA adjustment?
I'll look into the Schroeder. I owned a standard Triplanar for years but sold it in favor of another Graham. Is the 12 significantly better?
Much to think about, all of it good!