I would also make sure that your Rescue Media is bootable on your Mac. In theory you could back up your entire disk with Reflect - Mac partitions and all - but since Reflect doesn’t have native support for Mac partitions, I believe it would have to capture all sectors of the Mac partitions, which would lead to long backup and restore times and large backup files. Obviously that involves some extra time, but I don’t know if there’s a faster way given how Boot Camp sets up a disk. and then restore your backup over those partitions.
If you ever need to rebuild your system from scratch, you’d get the Mac side running, set up Boot Camp as new so that your Mac set up the appropriate partition layout.
I’ve never tried image backups of a Boot Camp system, but I suspect your best bet will be to use Reflect running inside the Boot Camp Windows environment to back up only the partitions related to Windows.
