Suggest you check the specific waist width of the boards you are looking at. Wide and mid-wide do not mean the same thing for every manufacturer and board model. You did not tell us what board length you ride, but with 10.5 size boots (not sure whether the Prions are particularly bulky or slimline) you might just get to the upper limits of some of the more slender boots. Obviously your stance angles also matter.
In short, figure out the waist width you need and then screen the boards you are interested in based on that.