If it is retail, and you still have the product key, then a clean install (to the new M2 SSD) using that key would be by far the best way forward.
Whilst Windows has got progressively better at adjusting for different configurations from a previous boot drive, I think it might be a step too far, and I wouldn't do it.
Download the installation software from here (on your current m/c before you do anything to it, and go through the process to create USB installation media for a different PC). (whatever you do, do that and the USB and product key will provide you an escape route).
www.microsoft.com/en-gb/software-download/home
Then I'd recommend you use this to clean install to the OS to the new, M2 SSD once you've built the new m/c. (you can get some interesting issues if you create/clone multiple boot drives under a UEFI Bios, so this is the safest, and probably easiest, solution).
You can add the other drives afterwards, though it will require re-installation of other programs/software, you will get a much quicker/better result.
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