wow, these boot threads need to stop.
really, you think full tilts are easier to get into than dal bello, its the same 3 piece shell design both are just as easy. Also, all kryptons are not to stiff for park. he tried on a krypton pro, which would be the stiffer model. Why dont you give the rampage a try seeing as it is the softer park model, or maybe the il moro, but im not a big fan of that top buckle. And you really aren't going to get shin band with a proper fitting boot, stiff or soft.
To the op you really shouldn't be to worried about how stiff the pros were, after riding a week or two they will soften up a bit. And to answer your question about liners packing out. Im pretty sure full tilt uses intuition liners which would be the same as dal bello, so both will pack out equally as fast. In the end it will most likely be a toss up but i'd say try and get into some full tilts because the toe box is smaller so that might be a deterant.