I had planned on brewing today but life got in the way. I have 17.5 lb of crushed grain in a paper grocery sack. It was crushed Thursday (today is Sunday). I can likely brew next Friday or Saturday. Am I OK to keep it at room temp (crushed) for the next several days? I was thinking about maybe also putting a plastic trash sack around it as well. It will be in a closet at approx 70-72F.