I have a 180 gallon dt currently with a 7-8 inc tail to tail vlamingi.. a 4 inch purple tang.. a 4 inch yellow tang and am wanting to add a sohal tang to the equasion and gauging opinions on would he be too agressive or be able to be happy with the other 3 tangs? Also people who have them are they like powder blues where they are real finicky or just moderately hardy like most other tangs?