Just install it in a VM. I’ve done this before to force Windows 10 to install on a USB stick, you can pass a VM an entire physical drive to use instead of a virtual hard disk and install to that SSD directly from the VM (just kill the VM and reboot into the windows partition when the VM tries to reboot to the windows installation). I’m sure if you passed the VM a USB created with Rufus you could install from that as well.
Just install it in a VM. I’ve done this before to force Windows 10 to install on a USB stick, you can pass a VM an entire physical drive to use instead of a virtual hard disk and install to that SSD directly from the VM (just kill the VM and reboot into the windows partition when the VM tries to reboot to the windows installation). I’m sure if you passed the VM a USB created with Rufus you could install from that as well.