I am new to N-scale and have decided to give Unitrack by KATO a go. I saw it at the Big E in Springfield and really liked it. Here's some questions. Can someone tell me what I need to get up and running? I plan on getting a KATO powerpack and perhaps the K1 and K2 starter sets. Anything else I need to get going out of the box? Special wires, connectors? What comes with the powerpack? Any help would be appreciated!