Nice softies! Rhodactis and Clavularia?
I'd be more concerned about aggression against the added fish, though maybe bioload is an issue; I don't know how folks run their reefs these days. My 90g is pretty oldschool, biggish skimmer, LR sump and a sulfur denitrator.
I do know that when I was really oldschool (small skimmer, wet/dry) Corallimorpharia and Xeniidae did far better for me than when I started to run things more lean, dissolved organics wise.
FWIW, I'm a big proponent of feeding Metronidazole-laced food for the first couple weeks after (and if possible, a few days before) a fish gets moved. It has some effect against external protozoan parasites.