sounds good. Is it possible to print QWERTZ on the keyboard?
Sounds good. As it's already reached this kind of price, and people are no doubt willing to pay, I'd urge you not to make any unnecessary cost savings and make it the most solid, high quality product you possibly can
As I assume you're going to have the wooden back remain as a Lastucase, have you enquired of them whether they have any contacts who might prove useful for manufacture / assembly?