Sorry for the late breaking news
Based on what I've heard by BMW NA and also my dealer BMW has delayed orders which include Individual options not on the standard option sheet to August and later production.
In my case I was lucky as I initially opted for delivery end of October and then pulled it in to Oct 1st.
You could try and convince BMW to get your production slot up but given it is an out-of-band option/order I won't hold much hope.
At least you didn't order Frozen Brilliant White where only 2 a month are leaving the factory.
- Jan