My go-to machine ( a Pfaff) recently just stopped working. The display will not light up, and foot pedal won't work. So I'm using my 301A. I wanted to use my Featherweight, but the baggie of feet for it has come up missing.
The feet from your 301a should fit your FW. I have both and switch the feet back and forth.
I tend to use my favorite machines the most. I am planning to take a few days to sew on my less-used machines, though. I do not want any of them to freeze up. Most of them are plastic mechanical machines.