Hoi,
Question: Is overclocking an issue for you? If not, you don't need a K-CPU. The graphics card is too expensive for the performance it brings.
Hard disk is a NAS disk that was developed specifically for this purpose, you don't need it in a PC. SSD is top. Power supply would be good quality, but overkill for your PC. Do you already have an enclosure or did you forget?
I have compiled a list of good quality components for you here:
https://www.digitec.ch/de...