I agree completely with Camaraderie. The liveaboard elements are what counts, as long as you stick to boats of well-tested design and in good condition. From my own experience, the only comment I would add is that an autohelm is a wondrous aid to singlehanded sailing......
Good luck with your search.
Leith (rhymes with teeth) is the port of the City of Edinburgh in Scotland. A Leither is someone who comes from that area.
I must go down to the sea again, to the lonely sea and the sky - I left my shoes and socks there, I wonder if they're dry?