I mentioned this in a separate thread but I thought I'd need to bring it up again and see is someone can help me. I need to smoke pork 2 cuts of pork butt weighing total of around 11 lbs, and three slabs of spare ribs. Normally I have the time to cook one cut of meat then go on to the next cut of meat as soon as one is done. However, this is not on my side this time. I am currently out of town and will not be back until after 10 PM tomorrow, and we have guests over for dinner on Monday.. I know pork butt takes the longest cooking time. I was thinking if it'd be possible to smoke the 2 cut of pork butt and the ribs at the same time on my 18" WSM smoker? This is my what I' m thinking of doing, please let me know if there is a better way. Assuming it takes 15 hours for the pork butt to cook and that I get them into the smoker by 11 PM. Since spare ribs don't take as long, I can let the pork butt smoke on the top rack until 9AM. When I'm ready to put the spare ribs on the smoker, I will move the pork butt down to the lower grate to,continue the cooking process. Does this sound like a right approach?