A:AnswerNot sure if Best Buy sells it, or not, but look for Defender 40th Anniversary edition, and Midway Legacy Edition cabinets. These have Defender on them. Also, I think the Joust Legacy Edition cabinet has Defender on it, as well, but Joust Legacy uses a crappy, washed out TN monitor. The other ones use the nice BOE monitors. :)
A:AnswerDepends on the individual. For me, it takes several hours to assemble an Arcade1up cabinet, but younger folks can do it in less time, maybe an hour, or so. Once assembled, it's just a few minutes to go through the wifi setup, if the cabinet has that feature. Otherwise, just plug it in, and have fun. :)