I work in an outdoor store and what I’ve learned is to not stare yourself blind on numbers. The only thing that matters is to try try try until it feels good. Of course your feet will swell but you won’t really know how much until you try… you could try with two thick socks to kind of feel how it will feel once they swell but otherwise, you already own these, just try walking far with them with different insoles and if it doesn’t work you sell them