Your project is coming along nicely, it will be a major upgrade from what you had.
I built a similar one years ago, around 21" wide, but used only 3 legs.
Looking forward to see the final product.
Wow, that makes me feel old.
I saw them in 1975 at the student union Auditorium, Toledo University.
Probably no more than a few hundred people, and it was a Good one.