Migration failed, not enough space to try again, cannot reach recovery

I was able to hook up a usb keyboard, and use command-r while starting, swap out the keyboard for my mouse, erase the hard drive, reinstall MacOS Mojave, and finally get through Migration Assistant.

Now I have to defeat the Buetooth Setup Assistant. Does this machine even have Bluetooth? I had already moved the machine onto a wooden shelf instead of metal, and removed my usb hub, and still couldn't get any bluetooth connection.

I am not copying *anything* this time. I have been at "about 2 minutes remaining" for the past hour or so, but maybe if I can get thrugh Migration assistat I can clean out the botched 1st attempt and make a 4th.

If Migration Assistant doesn't finish not copying soon, I'm going to have to stop it soon, so I can get some sleep.

Some reports indicate that Migration Assistant has the most trouble with .usr, so I think maybe I should temporarily transfer the contents to a temp folder in my user folder, make a fresh Time Machine backup, and try again, all tomorrow.

I was unable to defeat the Bluetooth Setup Guardian. It eventually closed since I was unable to get it to connect with my usb keyboard or my bluetooth keyboard in its alloted time, disabling keyboard and mouse functionality with it. Had to restart.

Turned out Migration Assistant hadn't copied *any* of my user data, including my all-important don't-get-sick-from-flashing-and-animation settings, or my software, including accessibility software.

I don't know what it takes to set up a new Mac these days...