To answer my own question, yes the wiring should be the same for the FF3 as 3VC. The much easier option though is to buy the FrSky DFT module, disable the telemetry via the switch on the back and pair it up with a V8R4-II receiver and off you go
Does anyone know if the HS PPM option is only available on the V8R4-II style receivers or is it only for the bigger channel flying receivers?