Finished the first incarnation of the Master yesterday. Did a quick spin and everything seems fine mechanically and also fit feels quite good. For it's height, the top tube length is very reasonable (58,5 cc). The 125 mm stem feels right. Saddle needs to go up +- 10mm but that's because the old flite flexes a lot, compared to a new saddle. Anyhow, first some good testrides to asses fit and feel before restoring.
For the final build I'm leaning towards Chorus 11sp carbon. Some sets have been sold in Classifieds for reasonable prices, if anyone might know of a nice set, let me know!