Most of the predatory fish require more room with fewer tank mates.But if you like that side of nature,then go for it.
At the LFS I help out at,there is a 380 gallon in the wall tank.It used to have a Horned Mexican Morray,Blue Spot Grouper,and a Gold Dog Face Puffer.There was never a lot of movement untill feeding time,then the tank went crazy.