In a well ventilated case, those temps are swa.  Mine were even better once I got an Undervolt/OC dialed in when I had my 3080 FTW3 Ultra, I went from this:
 

 
To around 55C in the same game with an OC/undervolt of something like 2040MHz @ 983mV, with fans at about 75% for that.
 
I also got this out of it:
 
 
Which for my CPU & that GPU is pretty good.  Keep in mind that was benchmark clocks, not stable completely by any means, the OC/Undervolt was rock stable though.
 
Looks like you've got it goin' pretty good so far though!
 
If I were you, since you have an air-cooled card, I'd recommend going for an inbetween in terms of high clocks vs going for an undervolt.  Find a happy medium where you're running 1025-1050mV (which will draw less power than stock) but running a nice OC.  You might even be able to run something like 2070MHz stable at those voltages too. mine was close, but I settled on 2040Mhz @ 983mV because it ran so much cooler than stock while giving me a nice OC compared to stock. 

Nah the cooler the better, just means you have good airflow - just because the GPU is "designed" to operate in the 80sC for 3+ years & not die doesn't mean it should do so :-D
 
I would definitely fiddle with your GPU as much as you want though, maybe find that edge where it's just barely under where it loses stability, or go for a more happy medium with an undervolt-overclock, you can always have profiles for both, run the higher end clocks in tougher games, and the undervolt/OC on easier titles to conserve heat generation & save on some power draw.
 
That's sort of what I've been doing.  I messed with it early on after pushing for max clocks for purely benchmarking, then got around to trying out some undervolt curves, tested 2100MHz @ 1025mV both in benchmark stress tests, and more importantly, games, and found it to be stable, then I decided to push on & see how I high I could go.  Seems like 2160MHz @ 1068mV is about the limit, going higher than that for a set voltage point doesn't seem to work as in it doesn't STAY at that voltage (since Afterburner is STILL in Beta for Ampere cards, can't blame it too much), and going any higher on clocks results in crashes occasionally in Cyberpunk 2077 or visual errors like shadows occasionally flashing.  The real kicker is the +1000 memory offset I can run along side that, I've never had a GPU with vRAM that could run an offset that chonkay and actually be stable while doing it - haven't had an issue yet... but I've also only ran graphics stress tests & Cyberpunk 2077, I'm sure some games I'll have to run it lower, and in games that I play more competitively like CS:GO, I just run the card at the 2100MHz @ 1025mV, with no memory OC, to lower the temperatures since I run with my FPS capped at my 240Hz maximum refresh rate, just in that title.
 
Enjoy the setup man, that's nice lookin' build ya got there 
 
Hopefully others will come along with more/other detailed suggestions, I'm not too uppity on OCing in terms of the CPUs these days, my 9900K is literally a "slap some voltage on it & put the multi at 50x" - I did more extensive work on RAM OCing for my system, but I don't run that for daily use anymore because the extra 400MHz didn't seem "worth it" overall.

Dabadger84
 
Enjoy the setup man, that's nice lookin' build ya got there 
 
Hopefully others will come along with more/other detailed suggestions, I'm not too uppity on OCing in terms of the CPUs these days, my 9900K is literally a "slap some voltage on it & put the multi at 50x" - I did more extensive work on RAM OCing for my system, but I don't run that for daily use anymore because the extra 400MHz didn't seem "worth it" overall.

Thanks bud, A few years ago I built a only EVGA PC.  Learned alot from that and used it to build this one, pretty happy with how it turned out.   Now the waiting game on a 11900k....