I have aprox the same shoe size, but I´m sure I´m much clumsier than you. For me, the Stomp is cramped. Helix LT was the limit for me (70 mm). I start to feel comfortable with 72 mm (Boss MS-3).
Besides, with 400 mm long, I can see a lot of space wasted in the sides. It could have perfectly been spaced even at 75 mm, which would have been fantastic.
Even when I find these 2 units stunning, and knowing they´re going to be great (well, We still have to hear tones and proxy performance), for me the footswitch spacing is a big fail. They could´ve done it much better. Really disappointed at a personal level. I´ll see you all enjoying your awesome Stadium while keeping my eyes in other alternatives...