Since you're not gaming.
1) The processor is fine. It's overkill really. You can easily get away with a dual core, or even a single core.
2) The video card you choose isn't worth it. Why spend so much when you're not going to use it? You could just use the onboard video and save yourself $300+.
3) 8GB of RAM won't give you any extra performance unless you're editing. Stick with the 4GB you have at home.
4) An 800 watt power supply is too much. You could get away with a 500 watt.