Get a projector.
I recently was playing some Fifa 15 and Madden 15 on a giant 128 inch screen, and those games are improved by LEAPS and BOUNDS from playing on a screen that large. Size matters, especially when it comes to many sports games. Also, racing games look absolutely amazing on a giant screen.
Fifa 15 on a 50 inch plasma, compared to a 128 inch projector screen is no contest. Not even close. Like playing two completely different games.
(my projector is a BenQ W1070 if you're wondering [about $700 ish] )