It's even simpler than all that--call the mill and ask them to fax you a spec sheet on whatever flour you are interested in. It will have everything on it. As far as grinding your own, I worked at a place where we milled our own whole wheat using hard red spring wheat called Bronze Chief from Montana. You never smelled anything so good as that that flour coming out of that mill. I disremember the name of the farm it came from but will think on it. For a really neat look, wrap up a batard not too tight, proof it upside down, then bake it right side up. We talking rustic.