What is the best way to add Queen Angel?

[Queen_angel]

I have a 750 gallon tank and currently have a large Koran Angel that is approximately 9”-10” and an Emporer Angel that is about 6-7”

I would like to add a Queen Angel. What size do you recommend would be best to add to our current tank to accommodate our other angels?

Do you think it would help if I get a couple dwarf angels (flame, lemonpeel, regal) to add along with the Queen to help distract and minimize bullying?

 

[wvned]

I have a large Koran. I had an emperor only slightly smaller. One day the Koran decided the other angel should not be in the tank anymore. My tank is only a 240 though. They grew up together.
The dwarf angels are totally ignored by the large ones so I dont think that will do anything for you. I have 2 in the tank.

I wish I had some wisdom for you but I really dont. There seems to be some trigger I didn't understand and then some serious aggression started and I had to rehome the emperor or it would have been killed.