Welcome! Do you know what sort of binding angles you want to ride? If you can manage higher angles like 35 degrees or more, then a 26 cm wide board might work. A wider board than 26 cm will allow you to ride lower angles with less chance of dragging your heels and toes. For reference, my boots are M29/E44.5/US11, I am on 27 cm wide boards (custom Coiler 163, Nitro Pantera 161W) and ride around 30 degrees front foot and 21 degrees rear foot. The more angle I ride with soft boots, the less precise my turns become, and if I ride less angle, I start to drag to heels and toes. The OES you listed is the widest, but I have no experience with any of those boards. I hope this helps.
D.