I would build this.
https://www.lowtechmagazine.com/2015/12/reinventing-the-greenhouse.html#more
Be sure to orient the solid wall north facing.
Traditional all clear greenhouses are silly, that whole north facing side gets no light, but loses much heat.
The crops you mentioned though like cold, so easy to grow all winter without added heat.
Looks good.
Also air piping system deep into the earth, to regulate temperature, is great for winter.
Also good, saw those in Minnesota. Though they do require electricity to work, not much , but some.
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