Ciao Andrea - I'm impressed too, keep working on this project!
I don't know Orentano, but I lived in Panzano in Chianti in 1974-75. Scratch-built a Goldberg Shoestring Stunter while living there. Brought it home to California and still have it. I recall an excellent hobby shop in Firenze that had everything. No flat areas to fly control line models in the hills of Toscana, lucky you live in the flat area close to Lucca. I have been back to Tuscany many times since then, wish I was there now.