Much to my surprise, the local center had a white "sleeper" available (I prefer that term to "stealth"). Wife and I decided to snatch it up. Took delivery today! Haven't had a chance to punch it yet, but I'm still loving it. Beautiful car. It did have the 19" wheels on it, just like I wanted. So I really lucked out. Also of note, it was a 2020, supposedly delivered to the center in the last couple of weeks. I originally thought they were from earlier in the year (maybe July time frame) and would be 2019 models, but not in this case; it is a 2020, missing frunk mat and all (which is fine because I ordered the mat separately a couple of days ago already anyway).
Also possibly of interest to some of you -- the price was the exact same as our order; based on option changes (blue to white exterior, white to black interior), this means the price of the performance upgrade is indeed $2K.