I do know a few things about them that I learned from my LFS
. As the owner has sold some to his customers and got their views. He recommends at least 100 gallons for them to be comfortable. He said they are very hardy (maybe even hardier than the yellow tang). They are very aggressive towards other tangs. They get better color the larger they get. However they are very pricey. I have heard nothing but good things about them. Im not sure of your tank size but if it is large I think it would go great with the two fish you have.