I am building my prototype of the rosswel/dragan/x-flyer at this very moment.

Yes, it is slightly complicated but not impossible, you have to take your time...
You shouldn't want to do this with a highly sophisticated programmable transmitter.
A cheap of-the-shelf 4-canal transmitter will do.
What you do need is a micrcontroller, or in my case 2pcs. Three gyro's are needed for the stability in every axis.
Furthermore you need 4 solid speed controllers who can handle sufficient current.

The airframe is ready, including the hardware. The software has been written but not yet tested.

So the hardware contains:
1x Receiver
2x Microchip uC
3x ceramic gyro
12x Low ohmic FET
4x Schottky diode

The total is amount of components on the PCB is 110!

Is there is anyone curious about this kind of rotorcrafts let me know.

Greetings,