Hi Tora Dog
Interesting project and one that requires some careful planning for the electrics. I can understand your desire to keep the wiring to a minimum but you also need to consider the Radio and ESC signal wires and the need to keep these separate from any high power equipment wires.
It would help if you could advise the specs of motors you are using and the ESCs ( Voltage, max current and/or wattage). I am unfamiliar with the V/A tele module so some general info and connection details would be welcome.
I am intrigued that you intend to use 4 receivers but believe we have discussed this on another post in the past, but 4 would seem to be a lot.
The aux items do not seem to be high current apart from the smoke generator which in my experience need its own direct fused/switched battery supply if using the heated coil. If it's the mist variety and needs 24volts the power use is not that great.
I believe you could achieve the same results with far fewer drop down converters than shown, unless you are following warship redundancy duplicated circuits?
Perhaps you could draw some block diagrams of each component and indicate its purpose and how it is to be controlled ie
Motor- battery ??v powered -controlled by ESC fed from ??v battery and Rx 1 (say) used to drive the prop.
With this info it would be possible to draw up a series of units and then decide how to connect them all together.
Good to see you are planning before starting to install and hope we can help further