hi and welcome to fishlore
i'm with shawnie, in the long run even one angel probably won't be too comfortable in a 10 gallon because it won't be tall enough for them and they'll be a bit cramped. definitely sounds like you have some aggression issues going on with them, my recommendation if it's possible for you is to look into getting a 29 gallon tank or at least a 20H (20 gallon high, smaller footprint but taller for the angels).
were you planning on keeping all four or are you trying to get a pair from them?