Thinking about buying one of these myself. Just got to find a decent sized one so it can hold its own with my miniatus grouper (the boss of the tank) and my white spotted grouper.
Unfortunately I lost both groupers in a disastrous move . As for adding a blue spotted last, I probably wouldn't. I found mine was really laid back. Got along with the miniatus no problems though. Still teetering on adding another blue spot. Worried he'll eat my juvenile blue face angel.