I am relatively new to smoking. I have experience with a friends propane Smokey Mt smoker and an old Brinkman charcoal. Jeff's newsletter and recipes are great and very helpful. I would like to convert an old upright freezer to a smoker. I have looked at the Smoke Gun, Bradley and the Smoke Daddy Cold Smoker. Anyone use these? What is the max temp. you can smoke at in a refrigator/freezer? Can you hot smoke at 250? I would like to cold and hot smoke in this smoker. What are the best heat sources and temp. controllers? Thanks!