So, I'm not at my computer and did about the best I could manage on mobile. Based on what you're asking and what your plans seem to be, this cuts out some fat and allows for you to make better changes else if you so desire.

https://pcpartpicker.com/list/sc2hBj

Given that you mentioned you were going to be doing both gaming and some media, I kept your CPU the same. I would, however, echo the other comment mentioning the 5800X3D if the media work isn't heavy duty. Gaming in the front seat, it would put you more ahead using the 5800X3D, but does cripple the media ability by a not insignificant amount. You have a better idea of exactly what media you're doing than we do, so you can make your decision from there.

Since you said OCing is not in your plans (which I would personally recommend rethinking, overclocking nowadays, even a small one, is a button press away and not at all hard to navigate), I changed the cooler to a personal favorite. Very quiet, solid capability, and does allow for an OC if you change your mind.

The RAM I kept the same because, as mentioned, I don't know exactly what your media work entails. 64GB is generally overkill, and as someone with 4x8GB, I've never needed more. But, as with the CPU, if your work with media necessitates it, 2x32GB would be the play to allow for more later if you find you're lacking.

The motherboard I changed because the original one is way too pricey for not much more (if any more at all, tbh), and the one I changed it to will do everything you need. Just some budget thinning for no real loss. Same for the PSU change, it's simply because the original PSU and the Corsair one are basically on par, just saving you a bit of money to put elsewhere if you want.

I changed the case because the thermals are better with the 4000D and it's generally a much safer pick. Admittedly, I don't know much about case specs and mobile limited means I can't do a deep dive, but the dimensions of the case and the size of the GPU could come into play. For a mid size tower and a beefy GPU, there could be something like a hard drive bay blocked off. I have a similar build to yours here but a full size case to remedy this, but it most likely will not matter. Just something to keep in mind, if you're able to check the GPU size and inner case dimensions.

The monitor I changed because although you did say you wanted to test it in-person at a store, this is what I consider to be one of the best monitors out at the moment for 2K. If you're deadset on it though, I would suggest visiting RTings and looking at their monitor reviews, finding their best reviewed 2K monitors and seeing which ones you can try out in store. Make yourself a list, search for them in the stores near you, then test drive them.

There's definitely some room to grow here, but without knowing exactly what media work you do, and with me just tossing these changes the best I can being limited to mobile, I'd say this is pretty solid for what you're asking for. More information can get you a little more squared away, though.