I'm not your exact scenario, but somewhat similar. I went from an RS4 to a Panamera 4S to Panamera Turbo to a 991 Carerra S (built to my specs) to an RS7. My observations:
When I got the 991, I was initially thrilled and had no regrets. I tracked it once (with a certified P-car club driving instructor), and learned how much I don't know about driving these cars like they were designed to be driven. We really had a good time that day, especially when I let her drive and got to see what the car could do with someone competent behind the wheel.
Over time, I started to miss having 4 doors. For me the 991 as a daily driver (weather permitting) started to feel cramped (I'm not big, just 6-ft & 200 lbs). It was a blast on the twisty canyons around Denver, and I loved the sound of the high rev flat 6. I didn't think I missed the Panamera's acceleration, until one morning some guy in a chipped Dodge truck wanted to pull against the 991. I'll be darned if that truck didn't keep up! Not a huge deal for me (there's always gonna be faster whip out there).
So in December of 2016 I gave up the keys to the 991 and drove home in a 2017 RS7 (not the Performance edition). That beauty was everything I missed about the Panamera, and then some. I kept it until about 1 month ago when I brought home a '22 RS7.
To answer your original question: I have no regrets about going from the 911 to the RS7. If I had kids at home, I would not hesitate to have an RS6. (I wouldn't let them in it - I won't even let me wife eat in my car, so kids would be a hard no for me). The RS6/7 is a BEAST.
The best advice I got about tracking cars was from the PCNA driving instructor. She said "if you're serious about these track days, get yourself something that costs $10k or less and learn how to drive it before you come back here with your $130k 911).
One last thing: when I decided it was time to get out of the 2017 RS7, I crossed shopped it with the Panamera GTS. I think the current models are really, really beautiful, and a friend has one. When I built one online the way I wanted it, it was going to be $20k more than a new RS7 with similar options.
As far as "must have" options: the one I appreciate the most is the carbon ceramic brakes. The B&O Advanced sound system: honesty I can't tell the difference between it and the "lesser" version I had in the 2017 model. That could just because my ears are 61-years old and I've been to too many AC/DC concerts.
Good luck with your decision!
Bookmarks