Suggestions for creator PC build

Hi there! I am thinking about building my first PC, which will be mainly used for photo and video editing (Photoshop, Lightroom and Adobe Premiere Pro / Davinci Resolve).

Can you advise on what would be the best key components for such a build? (GPU, Processor, motherboard, monitor...)

My thought at the moment is that I should probably invest most of my budget in the processor (i9-13900k?) and then just get an "okay" GPU (maybe something from the Nvidia 30 series, or low tier 40 series, even something used??) since photo and video editing programs wouldn't really get the most out of it anyway.

Don't really have a clue about what motherboard would be best for the use the PC is going to have. Happy to hear suggestions and things to look for.

Finally, what would be good monitor options for color fidelity, within a reasonable budget of ~ $300?

Is there anything else that I should keep in mind when building a creator PC?

Thanks!