Ohh, I wish you and your family a good trip!
If you accidentally come across information about “Chr. Beitz, Hof Photograph, Arnstadt Poststrasse”, I would be very interested. The only photograph I have of my great great grandparents was made there, about 1895, but I don't know yet where exactly they lived in or near Arnstadt. They were farmers and lived in several places in Thuringia.