Sorry for the radio silence. I got the boning done for the back yesterday and am still working on the front pieces. I am sort of doing an adapted effigy. It has the tabs and the front piece is similar, but my body just wasn't going for the back seams so I adapted my bodice pattern for the back, adding tabs, and put the seams at the sideback. It loses the shaping from the seam, which is where the major shaping comes from, but my column body and barrel chest really hasn't got much shape. I'm going to make them and wear them awhile and see how it works and make changes from there.
There are way too many bones in this thing so far. Another of the disadvantages of being a larger than average lady.