It's risky IMO
. They would probably be OK as juveniles, but as they grow they would more than likely fight. An Angel has to be the "boss" of the tank. 2 "bosses" would probably not do. One of them would get the tar kicked out of it.
I have a 210 with a single angel and I know from the way she treats non angel newbies, a second angel would be trouble.
I do by all mean encourage you to get one. I love my angel, she is the jewel of the tank!! You would not regret it!!