Compatibility opinions needed

[Tangs23]

I have an established 150g FOWLR with a Heniochus Butterfly and 3 yellow tangs. Ideally, looking to add a Powder Blue Tang, Niger Trigger and a Flame Angel.
Think it'll work ? I'm thinking so if I get the right size of each..

 

[Maritimer]

I would guess that the flame will work itself in just fine, the powderblue may face some aggression from the "three musketeers" already in place (yellow tangs), and that the trigger _may_ in time, be tempted to nibble on the heniochus' dorsal trailer.

Adding all three at the same time, and using either a mirror or divider to socially acclimate the tangs would be helpful.

~Bruce