Thanks Macco.Macrium Reflect is free and not that hard, really.
If you want to install windows on the other drive you better open the chassis and remove the existing one, just to be sure Windows does not touch it and consider it the one where to store its recovery, MSR partiotions etc.
That's why with Macrium is all way better, as you clone all those partitions at once from one drive to the other.
Ok. I found an awesome video on youtube for how to clone a drive with Macrium Reflect. I share if anyone is interested:
I will probably do this later. In the interim I would be interested to hear from anyone if they either support cloning or a clean install with my recovery usb? (Moving OS to smaller ssd).