Like any Pomacanthus Angel, they need a large system. I know the etailers say 100 gallon, but if you plan on keeping the fish for awhile, I would place is in at least 150 gallon system. Make sure it is the only large angel in the tank and make sure it gets a good angel food preparation that includes sponges and enough filtration (rock and a kick butt skimmer) you should do fine.
I don't have one, but I do have a P Maculosus, she is as tough as nails.
I do know someone with this angel, he has had her for 3 years in a 300 gallon system with no issues.