I had a Schefflera pueckleri for decades..grew a huge trunk,dark green leaflets..not quite as many as S. actinophylla though. And it never was as tall..I say topping at 25'. Then,it died after 32 years for no known reason. And this Amate reminds me of that plant...especially the free branching at a young size.
S.pueckeli's main and only drawback was that the flowers were dull,small. Not showy at all. That plant though survived 1992's 24f week of very cold arctic air. It came back from about 1" of bark to a tree once again a few years later.
I'm hoping Amate is something like that..with "Octopus" like flowers. Best case.