Need some help to reinstall Windows 11 on new drive

Hi guys, so I have a 500gb SSD that's nearly full, and I bought an NVMe to replace it. I want to do a clean install, since I have junk files I need to sort through on the old SSD that never made it to my storage HDD.

My concern is this, and I'm probably overthinking it: The OS key I have is for Win10, and I upgraded to Win11 during the free period. Will I have problems using the original Win10 key? Or is there a better way to go about this??

I would just clone the data to the new NVMe and be done with it, but a clean slate sounds divine since I've accumulated a lot of programs I don't even use or remember after 5 years since I built this PC.

Thanks in advance!