Yes, I would tend to lean towards this option for simplicities sake. Well, I've got some good ideas here, I'll give Funk a call and see what the story is. From the sounds of it, regardless of which of their subs I pick, it will be a vast improvement over Polk.
I mentioned this earlier, but I am concerned about power draw. A projector, receiver, sub, consoles etc, will that overload one 15A circuit?