Welcome to the elite "is" club!
A friend of mine noticed that HK + BMW Assist issue on the website and he was complaining about it cause he was building one for himself potentially and didn't want the BMW assist. I had the same issue and figured if they are going to force your hand that way, I might as well just pay for the tech package that includes the bluetooth.
Anyways, they just pushed me to week 11 it seems, so we'll have to watch to see when ours get built as they likely will end up on the same boat together.
And to wet your appetite, here's a high def video of an AW 135is convertible from the LA Auto Show: