Hi everybody I have a 250 gallon fish only Tank I have two Blonde nasa tang two blue hippos a powder blue Sailfin tang a purple tang a flame hawk I’m very interested in putting in a queen and French angel I would like to have one of them shows size if it is possible to do this which one would you recommend as the show size and which other one would be like 5 inches Also do you recommend me buying them at the same time or one at a time been in a hobby for over 20 years just never tried this before thanks