I completely agree, and, also suggest we bring bunch of sub-scale models down to somewhere open on Earth, like middle of North America, African desert, Australia, off its coast, somewhere giant and flat. It will provide safe opportunity to master environmental control before testing in production, as well as means to supply habitable megastructures cheaply.

Imagine a ~km wide cylinder just sticking up in Sahara, and inside it is New Shenzhen. Isn't that exciting!