Dan, I am using a passive hub for 6 arches (48 nodes each) and 8 Boscoyo medium mini trees (60 nodes each) , and 4 Boscoyo Chromaflakes (48 nodes each) all using microSCs. Everything is running in pairs - two arches, two flakes, and two trees for a total of 9 outputs connected to the passive hub. All 12v.
I hung the Chromaflakes under the arches.