Occasional scythe user here - I'm by no means "good" at it, but I can scythe our small wildflower meadow pretty quickly. Yes, it's a learning curve, but it is not a very steep one and it is a low cost and time investment. Ensuring you have a scythe that fits your body is a big help. Ours has a handle that can be adjusted for taller people.
It seems like it would be important to understand your overall process though.
How will you cut it? (options already discussed here)
How will you turn it in the field for drying? - Hand tools are definitely an option, but the difference between doing it with the best tool, and something that gets the job done is likely to be significant in terms of strain on the body.
How will you haul it from the field to your rick for drying? - A large flat trailer is adequate, if you can toss the hay from where it lies directly on to it.
How will you store it for the winter? - Traditional hayricks used a very basic wooden platform to lift the hay off the ground, then stacked it aligned to shed
water, with thatching on top. You can achieve the same waterproofing with a simple tarp. No need for storage in a shipping container. I'd go so far as to advise against the container - trapped air within, from the decomposing hay, could be harmful for people.