It looks super so far, I can't wait to see the finished coaches. I particularly like the ingenuity of the Fairing Solution! (I didn't know they were called fairings either - it seems that unless you know what they are called you can't find the word out easily...I had been using 'diaphragm' but it seems to be an American term.) I imagine it could work in N scale if fine material material is used...
Goedel
Goedel