I have a similar setup. All the wiring is behind the panel that's behind the waterfall. The AUX cable is run under the centre console tunnel and up through the access panel at the bottom of that storage compartment. The 12V power is tapped into the back of the cigarette lighter then run to one of the attached which has a dual usb socket adapter in it. One socket powers my phone mount and the other powers the Pure/Alipne unit.
There's space under the stereo and infotainment module for all that wiring.
End result looks like
this.