Honestly from what you have said @OP if I were in your shoes, I would probably get the PS5.
From my perspective, I also have a PC with near identical specs as yours with 2070 though I have a Ryzen 3700x.
I do play AAA games on pc as well and stick with the PS4 for just the exclusives and PS+, It just doesnt seem worth it to me to upgrade the PC every couple of years, but that is just me.
Either way you it is up to you.