Nice work GM! Came out better than I expected based on the drawings. I think it's way better smooth and the texture finish makes sense.

Regarding the connections, my preference is to diy the cable to the exact length required and use the connectors that you prefer - RCA on one end, XLR on the other. It's a neater solution than using adaptors. I have a pile of adaptors which are good for temporary hook ups, but when I finally choose where things will be, I make up a cable.