If you want to plan ahead, you could run a flat HDMI wire as well, allowing you put a projector in the back of the room later if you wanted, without having a similar problem. The cable cost less than $100 at Monoprice, and works great at 50ft in my house.

Just a thought.

Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire