It really depends on what you want to do with your computer.
CPU + MOBO: If you're mostly interested in gaming, I think Microcenter's current pricing on the 11400 or 11600K would give you roughly equivalent gaming performance at a better overall value.
RAM: For the same price you can get a similar model for 2x8GB at 3600 Mhz, which I think would be the better choice.
GPU: Regrettably "can you buy this GPU" is a more important question than "is this the best GPU for my build" most of the time. If you are planning on streaming (generative content, not consuming) then I would lean more towards the nvidia 3000 series. Otherwise my general advise is get the best card that fits in your budget that you can actually get.
PSU: That's probably an appropriately sized choice in terms of power.
Case: I think the Lancool 215 or Fractal Meshify C are both better overall cases at the same price-point.
Monitor: For this your specific, primary use for the computer is going to be the most important factor, so we'll need some feedback on that.
Other thoughts: Don't forget to budget for and select other peripherals if this is your first Desktop. For example getting a good quality keyboard, mouse, and headset will help you get the most enjoyment out of using the system.
@TaeTae What games do you play, or intend to play?
When you say "art" what does that look like? What are you creating and what programs do you use?
https://www.microcenter.com/site/content/custom-pc-builder.aspx?load=2a79d29f-76cb-4e5c-9067-5dd35a9631fa
Is this what you had in mind? The GPU is sold out rn, so is there another GPU that could work?
I think your selection would be great for those uses (with or without any of my recommendations). Regrettably, getting a GPU will probably be your limiting factor in completing a successful build.
For the monitor, I would probably recommend getting one "nice" monitor which will need to be a jack of all trades of sorts as I don't know if your budget would have room for a "gaming" monitor and an "art" monitor. I would probably consider getting a 1440p monitor with a good refresh rate (>120Hz) and decent color range. Maybe something like this https://www.microcenter.com/product/627518/dell-s2721dgf-27-2k-wqhd-(2560-x-1440)-165hz-wide-screen-gaming-monitor
If you determine you need additional screen workspace, and you get the money for it, you can consider adding in another relatively cheap monitor for a "secondary"
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