Is it being greedy to say I'd like Option 2 and 3 from that list?
Option 2 would be "Send to the Reserve Fleet" (or Standby Squadron, or whatever name you want to give it), ships are decommissioned but still looked after and kept ready to bring back into active service at, say, 1 months notice.
Option 3 is proper Mothballing, sensitive kit taken out so it won't be damaged, filled with foam, airlocks sealed and then left in a stable orbit.
If I had to pick I'd go with Option 2 as I would probably use that more.