I'm pretty fired up at this recipe and will be gathering the supplies this week. This will be my first deviation from in the box recipe kits so I do have a couple of questions. First, is this a standard 3 gallon of water starter? Second, what do the percentages after the DME mean? Third, the grain type, British Amber Malt, and my local supply store carries Crisp Amber Malt. Is this the same or would it completely destroy the recipe? Any other suggestions?