Should I overclock CPU along side overclocking GPU

[Livewire88]

Hello everyone,

I recently started tinkering with overclocking using MSI afterburner, and I have some questions.

1. When adding an overclock, if CPU/GPU temps are well within tolerance and there is no artifacting. Does this mean the overclocking settings are safe to use indefinitely?
2. I play games exclusively in 4K, which means I am GPU bound all the time. Is there any need to overclock my CPU?
3. Does a "mild" overclock have a drastic effect on a GPU's longevity?
4. is there any value in overclocking for the difference it makes to FPS against the possible wear it could cause on the card?

I have increased the core clock by 320MHz and Memory clock by 350MHz on my MSI RTX 5080 Vanguard, its upped FPS by around 8-10. CPU is a AMD Ryzen 7 7800X3D for info.

Thank you