I'm one of those crazy collector photographers, with a bunch of cameras and lenses. I even keep a list of my stuff: https://timshomepage.net/camera/ I currently only have FD cameras, due to the affordability of their lenses. On a side note, how does one get the squeal out of an AE-1?
Welcome to the forum. I can't help you with FD cameras as I switched to Canon only since digital became the primary format. I'm sure there are members here that can help. Good luck.