This is yet another fine example of the wonders and adaptability of card models.
Teo, looking at what you've done with internal structures you clearly have considerable experience in flying models. Fantastic work mister.
Don't know if the builder was Romanian, but a while back I saw another beautiful example of this idea by another modeller from your part of the world- an enlarged John Dell B-17G with four brushless motors and full-house R/C.
I'll continue watching your build with great interest.