Youre fine. There is a show tank here in Raleigh with roughly the same thing you have. Naso,Sailfin, Purple, and Regal, plus a domino, green chromis, and pj cardinal. Not to mention about 10 brittle stars maybe 15 to eat the food they feed 4 times a day. All these fish are close to full size and i think the tank is a 155 bowfront maybe 175....
THe only thing you need to worry about is your rock work. Just make sure you don't over do it and these fish have plenty of space to swim.