Heheheh, I had to try twice: my first try ended 2 off. :))) Took a while to even find a way through, let alone the shortest path. The last two took me way too long to spot. Masterpiece! Was stuck at 124 and then just realized how I could further optimize. I liked to solve it. The solution isn't intuitive, because it needs to do the opposite of what we would think necessary... LOL 
Insights