Good solid 1080p/1440p PC there mate. The 3080 is still a great card, I tested a 3080ti recently and it's not far off 3090 performance, and that's still a really good card.
Something like a 12700/K would probably be more optimal for long term.
This movie shows how an overclocked Intel 8 P-Core CPU and overclocked DDR5 ram can handle an overclocked 5090 (Lowest setting in order to test how much CPU bottlenecks things) at 1440p, the GPU is still the bottleneck so he will be fine with that setup for a good few years.