That's the build I plan on doing when I get a job. It would take me about 3 to 4 months to come up with the cash for it and a month at the most to secure a job, so by then, prices will have either come down or something will be discontinued
775 will be pretty well phased out by then, and the i5 and dx11 cards will be out, there is no point in even trying to part out a build more than 2 weeks before your purchase date, and you want to make sure you have the money to be able to buy it if you happen to spot a good combo on something.