If you can't spend all that right away, an option would be to just get some of the more important stuff for gaming. Get the top of the line processor and decent graphics card, maybe NVidia 770 or 760, then get a smaller HDD and probably no SDD.
Thats already probably 300 off the price.
Then you can meander around looking for a decent but cheaper motherboard.
Also with school starting up, look around for some discounts going on. I know HP and Dell are big with school discounts you might be able to find something with them that's cheaper, but not as higher end as you might be looking for, and that's prebuilt (saving you a little time).