So CiV will be your only performance critical application? Then you would probably want a fast CPU and a nVidia GPU. Using a "8 out of 10" guideline for those parts, and using no-frills basic but functional stuff for everything else, you would come up with a list like the one in the attachment. Those are all "Ships from and sold by amazon.com" parts.
The PSU is overkill for that selection, but compared to this one nothing in the 400-450W range (which would be about what you would need) appears to make much sense.