Do you have windows installer in hand?
Why don't you just skip the cloning since your HDD is far bigger than the SSD, you would need to backup everything on that drive, which takes longer time than it's worth.
Go ahead download windows 10 installer in MS website.
Install RUFUS, plug an 8GB thumbdrive to make the installer.
Shutdown and unplug the old HDD, boot with the thumbdrive plugged.
Go through the installation and see if the ssd listed in drive option.
After installation completed, shutdown and replug the old HDD.
Select the SSD as the main boot drive.
Now you have 2 windows, you can choose to delete the old one, but you can also keep it for backup, if ever the new one crashed / have problems.
the only issue you might have is the right power cables.
But that might not be the issue, only the version of the PSU might be. Else so long you have an PSU with the common power cable for that SSD/HDD and SATA cable (SSD not HDD?). It should "just work", also you already have some storage and there shouldn't be much reason as for why you can't add more. If you had more GPU and CPU power draw or more plugged into the system, then it could be worse, but storage is not the first thing to really care about.
If the PSU is not up to the task, that would be more of a concern and if it would be a fire hazard or destroy some components.
usually your storage devices aren't drawing an insane amount of power, so unless you're already doing daily coinflips with whether or not you get enough power to your system then i don't think you'll have issues