That monitor has a really weird resolution that won't look too great in a three-monitor set up. I'd just go for three 1920x1080 monitors so that the set up isn't too wide and runs a lot smoother. The more pixels there are to work with, the less fps you will get in-game, too. With two 780s, Nvidia Surround will be able to run all games at great settings, IF the monitor is 1080p.