It took some time, but here is my post-mortem document.
https://drive.google.com/open?id=0BwV4JhqN8FZabDRDVllaM0ptNE0
I did not go into details of why a metaheuristic would be so good here : read Magus’ and reCurse’s articles for this, or my old post-mortems.
Hope you’ll like it !