Good trip man, but as you said, lessons to be learned. Maybe next time pack some emergency food, you have lots of space on that GS, I should know, I own one too. I can live for a month on what I can fit in my side cases, so you can too! :) That leaves room for food on top, no problem.
Can you camp there? That will significantly reduce your expenditures. That or using hostels, which I would do there in northern Europe.