Upgrading to M.2 SSD from SATA SSD

Hi all. My wife bought me a 1Tb M.2 SSD for my birthday which I plan to use for my Windows drive. Currently I have a mix of SATA SSD's and HDD's with my Windows install on a partition of an SSD. I'm looking for advice regarding migrating my windows install onto the new drive. Is there anything wrong with my plan of removing the C: drive physically, installing the M.2 and doing a fresh Windows install on that and then reinstalling the old C: drive and copying over what I want to keep (game saves from the documents and downloads folders etc, not programs) before formatting it to use as regular storage? Game installs, movies, music, images etc. Any advice/shortcuts/potential issues would be gratefully received.