Hi, That's looking good. Your crypts will grow and fill the foreground well and it will grow to a reasonable size. But I think you can afford to plant taller plants at the back to set up a natural background. Maybe something like hydrofilia corymbosa (narrow-leaf variety), also called 'Temple Plant'. Its grows tall and the leaves are a lighter green. I like putting light coloured foliage in the background as it brightens up the tank.
See on the pic I attached. The Background plants are hydrofilia corymbosa.