Thank you so much Jan! Doing the rigging is not so much difficult as it seems. It depends which kind of material you do use for this job and how you do it. I started with EZ line rigging wire which I still use until today. They are just a bit thick for me now, I just use them if I need thicker wires. Mostly I use now INFINI lycra rigging in different thicknesses. They are very flexible and one can cut the superfluous wires over the end comfortably with a fresh sharp modelling knife blade. If the wire tension is accidently too low you can heat a metal rod with the lighter and carefully get near the loose wire. Because of the heat the wire will tighten.
I also have superfine metal rigging wire from MODELKASTEN but I didn´t used them so I can not say anything about them.
One important lection which I learned here is to start rigging from the middle to outside just because it will be much more difficult to make a proper rigging if the outer wires are already installed. Just try it, it can be fun!
Prost 