Best "retirement" for a (disposable) captain

I've finally gotten around to try out the hidden ambition, and created a captain that would start the lineage and fulfill the reqirements for it (and take care of some early game stuff, too).

Now, question is - how do I "retire" that captain the best? The constraints are that no other things that carry over to the next captain can be done (i.e. no visiting Hybras or Titania, possibly no visiting London as it triggers Ministry Monitors spawning etc.). Should I lose the poor sod to nightmares? Walk the road of Ephemera to it's destination (if that's possible without disturbing carry-over things, of course)? I would like to hear your suggestions on that captain's poetic end.