That windmill is a baby. In Australia there are 30 foot wheels in operation. The bigger the wheel the less wind needed to turn them. They are used on water bores all though a lot have gone to solar.
Seems you handle the ups and downs of the hay business well. Enjoyed the info on hay and marketing it. Windmill looks good. Anxious to see it installed.
That is awesome, my wife is in the office to, business, especially anything ag is an animal and requires excellents in the office. You are blessed to have her .hope the haying is going well. Take care.