I'm building one right now but it's more low end at 800 bucks. Already have the case and PSU. Let me know if you have any questions.
Careful with buying a video card this minute. AMD announced a budget 199 USD card yesterday and Nvidia has two powerhouse cards coming out that will drop current card prices when it releases.
Here's my build keeping in mind that it's a low-end gaming build:
http://ca.pcpartpicker.com/list/vGKznQ
Video card is omitted due to waiting on price drops and I suggest not going with my CPU. Most people would get an i5 or i7 for video editing. A secondary 3 terabyte non-ssd hard drive might be useful for you if you're keeping the video files locally.