You are right on the edge of what I would call the "no compromises build" - good video card, best processor available and plenty of overclocking room. If you absolutely have to hit the budget, drop to a B75 or H77 motherboard and an i5-3350p, and no aftermarket cooler to save ~$75-100 over this one.
i been watching that gold rush crap and things have been going slow but....... 400 bucks.
I had a 2500k but dropped it for the budget" machine. you can add it back if you want. also, if you can find some ddr3 1.5v 1600 geil black dragon ram, it runs really good and the red lights add something to a dark, sparse interior.