I'm doing pulled pork for a friend's business party. I currently have 70 lbs of rubbed pork in the fridge. I think I can fit all this meat in one load if I am strategic with my placement. I usually go about 12-15 hours with 20 lbs. How long will this need to go? Will it go longer based on volume of meat. How many people do you think 70 lbs will feed after cooking? Thanks for the help. I'm using the older Smokey Mt, not the new one.