Quite impressive! I am definitely sold on the willow.
I have a giant bamboo, it is only a baby though. Two years old and just about thigh high with the odd shoot waist high. It's chusquea gigantica I think, apparently the canes when they start properly appearing canon be really think and massively tall like 30, 40 foot.
I like growing shit, it seems you do too. I like the idea of willow also for the dank aspirin bark water you mentioned. Herbal is good