I finally built this, I have been meaning to do it for a long time. I will be much faster building my mushroom than I was building this.
I asked a while ago about the width of the canes here. The width I chose was 14 inches; the narrowest I could do that would allow me to pull through to a V-sit. As my shoulders broaden I am sure it will look better, I would prefer narrower but this is the best I could do.
Here is the setup itself:
Here is me on it: