Question Intel 13700k handle 3090?

There is no such thing as "bottlenecking"
If, by that, you mean that upgrading a cpu or graphics card can
somehow lower your performance or FPS.
A better term might be limiting factor.
That is where adding more cpu or gpu becomes increasingly
less effective.
If your game is cpu centric, the 13700k may be the limiting factor.
But, trying to overclock new gen processors is mainly fruitless.
If you chip was capable of running faster, it would have been used in a 13900K
Best to let the default turbo mechanism boost a couple of cores past what an all core overclock could do.
Do not be alarmed if it runs near 100c; that is what it is designed to do.

AND!!! Update your motherboard bios asap. Latest fixes mitigate damage caused by excessive voltage.

If your games are fast action, high resolution or heavy on details, the graphics card will be the limiting factor.

I think you have a good balance of cpu/gpu.