I had an oatmeal stout the other night at a local brew pub that they had brewed in house. My LORD, was it good! Dark, creamy, tasted awesome! now, I want to make one. If you know anything about me, you know I have a Mr. Beer and am about to bottle my first batch. Will an oatmeal stout be too much for me to try as a 100% newb? Is that an all grain thing?