Congrats on the built. The light spokes are right for Fiamme yellows, and if built well should serve for years. I use 1.8-1.6-1.8 spokes on many of my wheels including the 26" commuter which has endured 20,000 plus miles of abuse and is still fine an will probably last until the brake track wears through.

BTW, the lessons you learned building a flexible rim like the Fiamme will improve all your wheels, allowing you to achieve even tension and maintain it through the build with minimal effort.