Is it enough for me just to download the latest Electrum software to my new PV and verify the signature?
With verifying the signature, you make sure that you haven't downloaded a fake version of electrum.
This requires Kleopatra, if I recall, correct? Is there any link to a step by step process?
Follow the guide provided by DireWolfM14.
[GUIDE] How to Safely Download and Verify Electrum [Guide]