You might just do a national search for the car you want. We always seem to have some in ATL. Looks like we only have one right now, but I have seen more at any given time:
https://www.jimellisaudi.com/new/Aud...df0657ef69.htm
Or you could step up to the RS6 Avant:
https://www.jimellisaudi.com/new-inv...nchor-model-23
Or wait for the M5 wagon...