No you are not being ridiculous! I bought a rolling travel case for my machine which made transport much easier. I sometimes take my Janome 6600 to retreats or classes. It is a heavy machine and carrying it from the house to car or car to wherever your class is, may be your biggest challenge. I highly recommend getting a rolling machine case. There are plenty of them out there that are not as expensive as the Tutto bags. They will protect your machine and enable you to get it from one place to another without injuring yourself or your machine. As a bonus, you can add fabric around the machine as extra protection for the machine and extra storage/transport space.
Do a google search for sewing machine rolling cart and you can get an idea of the range of carts available. Just be sure to measure your machine to get the right size.
As a side note: I took my 6600 to a retreat years ago, set it up on a small folding table and the table collapsed,my machine fell to the floor! I was horrified that I had killed my machine. Picked it up, set it up, and it was OK. Used it during the retreat with no issues but took to my repairman as soon as I got home, just as a precaution. He checked it out and told me "these machines are tougher than they look". Not a thing was wrong with it. Now while I don't advise letting your machine fall or get mistreated in any way, it is comforting to know that they are tougher than they seem.