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Well I finally got some motivation to continue this project, and now most of /po/ is gone, including my thread. I had no enthusiasm for this thing until I got this done, so it hopefully shouldn't take much longer.
After doing the calculations with the help of a math-wise anon, I realized the v4 geodesic was really no worse than the v3. Because at this scale the difference between strut lengths is no more than the width of my cutting blade, I was able to simplify it down to three lengths.