Here's a good enough docking station for your Eachine Pro58 module receivers. Good enough because you need to make some adjustments and currently I have no time to continue it.

For BECs you can use a simple Pololu step down to 5V regulator or if you have a spare Airplane ESC, those that have built-in BECs, you can also use that (suggested by GC9N himself, mr. Achill∑s firmware).

I've included the .step file so you can work on it and customize for your own. Few things that I think you need to customize are:

1. Switch holes - to turn on/off your module
2. Holes for the wires that come out from the module, Power supply holes
3. Thickness of the latch/snap lock of module cover
4. Others that i didn't know of

Again, this is a prototype stage. Please don't blame me if anything bad happens to your module and to your Fatshark.

Happy flying!