Okay, about to take the plunge and go buy accessories for my new gift that I recieved yesterday. Thought about the nest, but, for only 30.00 more they have a table at the store, already built, so will definately get that. Auto lock band...should I purchase? Slide metal top...is this something I need? Give me some opinions as to what to buy, please. Also, I think for my first firing...I'm going to go for a whole tirloin tip roast. Tips/ideas/recipe? Much thanks!