Back up all config files for restore to 'new' machine

I have a working jitsi (and soon jigasi) setup on a DigitalOcean VPS running Ubuntu 20.04.
I will soon be moving to a different VPS running Ubuntu 16.

Is it possible to:

  1. set up the new VPS with the same hostname and other items
  2. install required ‘stuff’
  3. generate my ssl
  4. apt install jitsi-meet
  5. apt install jigasi

copy ‘stuff’ backed up from DigitalOcean machine and be in business?
If yes, what ‘stuff’ should I copy and do I need to worry about file ownership, etc.?

Thanks.

Anddrew