You're a bit light on PSU....
220w x 4 = 880W without CPU, Mobo & Ram...
Try 3 cards and not 4 and see where it gets you!
I actually have another 850w PSU. My plan was to connect 3GPU + mobo on one psu and 4 GPU's on the second psu.
I tried with just 3 (switching the Asus and EVGA) but can't get it to work unless I put one of those cards directly on the mobo.
Just remember to only use 1 PSU to supply power to the motherboard.
And if you use multiple psu's make sure you use the same PSU for the riser and GPU or you can damage your gear!