If you really pack that thing with coral, I would not be shocked if you ended up with 9 panels - 3 for each 2x2 area. It is not uncommon on the national boards to see at least 6 on a 6' tank.
He hides till the lights come on! I had my 2 black ice clowns in the basket with it for 2 weeks, they stayed with it for 2 days once I put it in the tank! And now they like the torch! Lol