I do have 3 of the Asus VG248QE's and while the color isn't the best, the gaming experience is great. Very smooth and fast response time. If you set the height and angle right on all of them, the color should look fine when gaming in surround mode.
I have 2 780ti's in sli, but crysis 3 on ultra will bog me down to 40fps or less, so it defeats the purpose of 144hz.
but cs:go will easily cap at v-sync, and many previous generation FPS games will have no problem running at 100fps plus making good use of a 144hz surround set up.