If you’re worried about the cold they'll have a better chance in the ground. Some growers dig holes and put the container in the ground to protect the plant.
I can’t imagine having that many plants. I just picked up some tree fertilizer, sulfur, and manure for my tree. Will likely need to buy these every few months along with a few other amendments and nutes. I’m beginning to think I’ll end up spending more on a single tree than I would on high quality leaf over the course of a year.
Maybe plant some, and keep some mobile. get prepped for the winter. Get 20 bedsheets and 20 old school light bulbs to keep them warm on frosty nights? They are hardier than we know.
25 inch heavy duty planter coasters, with the 6 ball bearing casters saturated with garage door spray grease, to help them roll for longer before rusting. 6 Holes are drilled to allow drainage from fabric bags. ...now they can be easily rolled into the greenhouse if conditions dictate.