@ Hannibal. Prepar3d runs at about 30fps and DCS A10 around 20 fps with all settings turned to medium. For now I'm running without the two outer monitors. Getting around 40fps that way. Next year when the GTX880 comes out I'll upgrade and hopefully be able to play at 67860x1680 at around 40 fps. Also contemplating on getting two more HP ZR30w's. That way I can go SLI. The hodgepodge of different monitors prevent me from using my two GTX 680's in SLI right now.

Edit: I succeeded in getting my landscape 30 inch and 2x22 inch monitors in portrait to run in SLI today. 4460x1680 is running at 65-70fps now. With everything at high, sliders maxed out and TSAA enabled and MSAA at 8 I'm getting 45-50fps. Not scaling badly at all.