Hi @ravven, please bear in mind that whilst this kind of setup might possibly be adapted for larger screens, the Tobii C4 still only officially supportes up to 327 inches with 16:9 Aspect Ratio or 30 inches with 21:9 Aspect Ratio, so if you do decide to try and recreate the advice here, consider that you will experience most likely a significant reduction in eye tracking accuracy.
That being said, if you do decide to try and set this up, we would love to hear your experiences and impressions.