That is a good sub, but it will have a hard time presurizing that large of a room.
I have a room 2 times as large, and I have a Plus paired with a Plus/2 and like I just said in another post, they struggle at times in my really large room...
What is your setup in that size room going to be... just for casual listening, or powerful movie experience..?
For the latter, I would suggest at least 2 of those subs, or 1 Plus/2 or possibly something more... I as well as many here will suggest dual subs for that size room to smooth out response. If that is not possible, go for something larger.
What is your budget, and what are you looking to accomplish here...