The worst room is one with equal room measurements, or that can easily by divided into each other. 10 x 10 x 20 suck, but 12 x 9 x 23 would be better for room nulls/nodes. Multiple subs will give you the best results for all seats, if placed correctly. The 800 is a beast though.

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