There is an EP125 and EP175, no EP150?

What is your budget? For that room your going to need a decent sub, I would say get at least the EP350 or higher if you can afford it.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85