Try a Cooler Master case and PSU, could cut down the price.
Could try a cheaper keyboard/mouse combo.
That might free up enough money to do 2x GTX 570s, instead of 1 GTX 580.
I'm going to stick with a Seasonic, Corsair, or non-Earthwatts Antec PSU. Nothing against Cooler Master, I just don't know their reputation for PSUs. Their cases and coolers are quite fine, though.
keyboard/mouse, yeah, I can definitely cut down here. I might get a Logitech MX518 mouse and a Microsoft Natural 4000 keyboard, personally.
Video, I don't think I'm going to do SLI. Since I'm going at 1920x1200 or 1920x1080, then a GTX 580 is unbelievably overkill. You could do a GTX 560 and it's still overkill.