I'm brewing this at the moment. I went with the White labs Edinburgh yeast. Hopefully it will impart the smoky peaty flavors. I did notice in my research that generally Scottish ale don't use a lot of crystal malts, but more roasted barley to color or flavor. I went with this recipe cause it used what I had available. I just hope my basement stay cool as the weather warms up. Interested to see how it turns out.