Ciao! I read your build history, as for small cars, i like your project!
I'm asking for your feedback on the TT seats you have fitted. I'm 1.78m tall, in this car I do not find a good match between seat position and the clutch lever, in detail when I have to release it (I set the steering wheel centered in height so I can see the dashboard without cut). I tried shim under the seat rails 10-15mm, for the front bolts, to make seat base inclined. I felt a slight improvement, it didn't last long. Let me know your feedback.
For yours, I also suggest disc brakes at the rear, I've heard they are the same parts as the Polo/Fabia and I saw that you had a crashed GTI at your disposal, have you considered fitting the rear spoiler?