|That case appears to have plenty of room in it. However, it is a bottom mounted PSU, which does not dissipate heat nearly as well as the traditional top mounted.|
That said, why in the world would you want to use 4 way SLI? Do you have lots of cash to throw around? If you equip the rig with high end GPUs you no doubt will need to increase the wattage of your power supply.
Would all this be for bragging rights about frame rates? The above is just my opinion. Take it for what it is worth.
All that doesn't take into account the $400+ price tag of the motherboard. Seems like lots of extra cash for little gain.