Since I am relatively unfamiliar with the D&S set, I would like to ask some questions. Does this set have a 5th Generation 4-6-0 and a newer chassis? Also, does it have improved chuffing? And, does it smoke a lot? I am entering the Large Scale hobby and anticipate my purchase. I might get add-ons to the set if I like it enough. Thanks in advance for answering these questions.