I would highly recommend following Ooffy's advise. Stanzel units are critical to leadout alignment. Plus, they are now quite elderly and might fail the pulltest after you build it into an airplane. That's very discouraging, I promise. Happened to my #1 .29 Proto.
With the H&R-type torque unit, you cannot use as big an elevator, but it will do a fine job of controlling your plane, with much faster response to control input from my experience. Plus, you can tell him what you're going to build, get his recommendation on elevator area, and get a unit made just for your plane size. I hear nothing but good comments about Marty Higgs' workmanship.

Steve