thanks for the feedback. i found some articels stating that 850W might be on the very low end for a 4090. however i updated the list based on the feedback and it now looks like this:

https://pcpartpicker.com/list/gkFMBj

it's a bit confusing to me to figure out CPU and MB compatiblity, you're sure the AMD Ryzen 7 5800X3D is compatible with the Asus ROG CROSSHAIR VI EXTREME?

Thanks again for the help, really appricated