Here's a build that has some of what you want. Change the video card to a GTX 960 or 950 as they have HDMI 2.0 if you plan on connecting to a 4K TV. If not any card with a DP connection should be capable of 4K. For gaming at 4K you'll need more than a GTX960 though. I'd look at spending closer to $1200.
You can customize your own hardware needs at this site as well. Just be on the Canada side.
http://ca.pcpartpicker.com/guide/7MM...-390-gaming-pc