I am sure I will have some species tank if I have problem, but for now I plan to keep them in the same system. I tested and have keep Gigantea, Malu and Haddoni in the same tank without problem. Had problem with Magnifica so I have to sell the two magnifica I had for now. I just don't have the room for them. Once I got my system going and free up a lot of the smaller tanks, I will get a Magnifica or two.
I don't plan to have this system crash on me. Been there, done that and don't want to repeat it. (Huge system crash that is)