Assuming at Ultra, I think it'd be hard to maintain 120 FPS average (there aren't any 1440p 144hz monitors, the ROG Swift comes close at 1440p, 120Hz). Just looking at a few benchmarks, BF4 included, for SLI 780 Tis, you'd be averaging 140 FPS on ultra @ 1440p, add two monitors, and that number is likely to drop down drastically.