Whatever you decide I would keep the Velodyne and run 2 subs in your room spaced out, which will give you a better FR. The 350 is a great sub.

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