The sale bill doesn't even say it is a pull type and therefore does not even give the PTO speed or other info. 14 foot header.
My tractor is a compact Ford 1720 with 27 hp. Archive photos spoke about a JD R not being enough and the family going to 830s so I'm convinced I wouldn't have enough ponies.
I had occasion to work with an older Old Amish man a few years ago and he willingly allowed me to ask a number of questions and explained their faith, different sects from Old Order Amish to Mennonite.
He explained that because Kansas gets so hot during the summer and it is so hard on draft horses that it was decided to allow farmers to use tractors if they wished to but the tires could not be inflated.
As modern day profit margins shrank and larger farms were needed to provide for a family tractor horsepower sizes increased. I've seen a lot of 4010 and 4020s as an example.
Sometime in the 1980s the horsepower had somewhat out distanced the no air tire riggings and it was decided that they would be allowed to use air to aid in the tractor traction. Some changed, others didn't and it remains so today.
I've lived in this area since 1982 and I don't recall ever seeing draft horses working in the fields other then pulling hay wagons. It is probably done, but I've not seen it.
Horses are used for transportation by many of the individual sects, but many use their tractor to pull trailers instead.
I guess you could say that while they are indeed Amish they are much different than those in PA & OH.