EXCELLENT write-up! Detailed Image is great, I'm in the US and able to buy nearly everything I need there.
I could not agree more about it taking forever ... polishing, claying, etc just does not happen in one day. I ended up doing mine over a series of three afternoons and one full day. The effort was so worth it in the end. Your car looks great and while you don't have 'before' pics, the correction looks nearly perfect ... which is as good as you're going to get.
I'm not sure about you, but I would not do this for someone else even if I was paid!
2011 BMW E92 335i - Le Mans Blue/Black, 6MT, M Sport package