So I finished today my poor man's "cockpit". 
It is pretty much a 1:1 copy of CupPilot's first setup so many thanks to him and his detailed pictures and templates. He inspired me to build something at all and was and is a big help setting it up. 
I used the same displays and keypad as he did, so there is not much to say. You can see his setup  here.   
Labeled keypad: 
   
Panel cut out with the keypad and MFCD frames. Unfortunatly I have only an electric fret saw and I didn't bother to file the cut outs properly, so there are small gaps, you see it better with the paint on. 
   
back view: 
   
another detail view: 
   
buttons of the display reattached: 
   
you can see the gap below the frame... 
   
semi-finished: 
   
aaand done. now you can clearly see the gaps and I messed up the paint below the UFC, but... I found out I have a friend with a CNC and that spot will maybe soon be covered by a AHCP. 
   
Cheers, 
DC