Similar story, but mine was an Audi A8 6 cyl. MSRP and numbers almost identical.
I also wanted the 8cyl. Now that I have had it a year. I’m satisfied with the 6cyl and I got the same form factor, look and luxury driving expereince. It’s a dream and the best car of the 30 I have owned or leased in my life. With all the modern traffic and stop and go driving you wont miss the bigger engine. The luxury is what matters