hey thats a sharp start. that live rock looks to be possibly mostly or fully cycled, thats fun to try and assess just off pics alone. how much of this guess pans out lemme know:
-seems to have coralline on it
-all seems to be similar shading, has benthic (underwater and in place growths) organisms on it like little fanworms etc maybe some pods? i ask because typically the conditions required to have coralline allow for these inclusions as well.