I have one of those Centro/Masterbuilt Digital Electric Smokers. I don't have the dimensions for it off hand, was hoping somebody who also had one would know. About what size of a pork shoulder could I fit in there, like a whole one? Or maybe jsut he picnic roast? Need a little help on this as I have a big BBQ coming up in a month. And my free time will be hectic until then haha.