I have purchased a cheap light weight viking to take to classes due to the weight of the bernina and janome. I also don't think it is a good idea to keep unplugging and wrapping leads etc. I remember the olden days with computers and because we had to pack up each evening after school the wires and plug areas caused a great deal of breakdowns .also the constant movement caused many problems with the computers.
For now take the janome as this will be a learning curve and other owners will give hints etc. make sure it will not roll or move when travelling