Ok so if you aren't changing any other components, and your SSD is of the same / larger size than the SSHD, then your best and easiest bet is a clone. Macrium reflect is one of the best free cloning softwares and you can watch a youtube video for a detailed tutorial on how to do it - its very easy. You won't need to bother with the Win 10 CD or license.
If your SSD is not bigger than your SSHD, a clone can still work but its recommended to do a clean install instead. You won't need the CD. Just grab the product key for your existing windows 10 install using https://www.magicaljellybean.com/keyfinder/. The download the Windows 10 media creation tool and download the latest Win 10 installation media to a USB flashdrive to boot from. Then just follow this guide http://www.tomshardware.co.uk/faq/id-3567655/clean-installation-windows.html. Enter your key that you retrieved when asked.