Well you have many options when it comes to this! but ill try to get yours to a minimum of 900$ i just finished my rig and pay'd 811$ its pretty good! i love it
Here is your computer that i set up for you(feel free to change as you will and i left the operating system open and the rest of ect. stuff.
http://pcpartpicker.com/p/NKpRXL
My build is this:
http://pcpartpicker.com/p/z4V43C