The ballasting has been done, not perfect but seems good enough. I have now laid the track on top though await some nails to properly fix the track down. A little light gluing was done to allow some test runs using my Class 33 and Class 28, both ran fine. I was surprised how little issues there were.
Now, laying track onto ballast is unorthodox but i am trialing a new method which hopefully means less mess and makes it easier to move track afterwards. Later on i'll paint the track so it blends in with the ballast below better. Well, we will have to see how it pans out anyway!