I was wondering what SIZE ham should I get for the 3-4 hour smoke per the newsletter....My local butcher can only get a 18LB fresh ham and he said that will take 8-10 hour to smoke. I can drive a town over and get a smaller ham that will work ,but I wanted to know what size I should get to make the cook/smoke time 3-4 hours.......Thanks and Happy Holidays!!!!!!!!!!