Linux loves dual boot, windows is the problem and always has been. But as long as you install windows first and Linux second, there’s no problem whatsoever, the installer detects your installation and automatically adds multiboot. Installing windows after Linux means that you will have to restore the bootloader.

Are you confident opening up the computer and replacing the storage device (probably SSD)? Dual boot can’t screw up much of anything when you only put one OS drive in at a time.