Hey Senator,
Sorry for the late reply. I just had a shop around PC Case Gear, and you can get a system for $2,493 in total, that will generally dominate anything you throw at it. Here are some benchmarks, and keep in mind this isn't SLI, just one 570:
BENCHMARKS
Basically you'll be running 60 FPS + at 1920x1200 all the time.
With a budget of 2.5k - 3k, I didn't understand honestly why you would be getting that motherboard, so I went for something a little more... enthusiastic
CASE:
NZXT Phantom White - $189
MOBO:
MSI Big-Bang Marshal - $549
CPU:
i7 2600k - $369
COOLER:
Thermaltake Frio OCK - $89
RAM:
G.Skill Ripjaws X (2x4GB @ 2133Mhz) with cooler - $215
GPU:
MSI Twin Frozr II 570 - $399
OS/GAMES DRIVE:
Corsair Force 120GB SSD - $289
STORAGE DRIVE:
Western Digital RE4 1TB - $139
PSU:
Corsair AX850 Gold - $255
Honestly, that motherboard, will make you love life. I even tried making a theme for it, keeping with red highlights on the CPU cooler and RAM. ANYWAY, this is what I'd purchase if I was building a rig for 2.5k. I left it at 2.5k in case you wanted to add something with the left over $500, or even put it towards a nice new mouse/keyboard/headset.
Hopefully my 2 cents helped. If you need any more help just give us a bell and I'll gladly shop around for you, I love making rigs to a budget, been fine tuning mine for a week just seeing where I can save!