Im new to model railroading and very new to dcc. I am considering getting the nce power cab. I am wondering if it will have enough power to run four locomotives at the same time without getting a booster. The layout will be N scale. Two of the locos will be hooked together. I am not running any sound on the locos. Also does the power cab have some kind of memory to remember the speed of each loco. For example if I have one loco at full speed and put in the address for another loco that is stopped will that loco automatically go to full speed or will it stay stopped until I throttle that loco up. Like I sayed I am very new to this and trying to learn. Thank you all for help.