Hi nbjs
Did that trip in 1976 in a 32 footer.
Would have no hesitation doing it in a GOOD Spacesailor.
As to your question " Has any of them had osmosis blistering hull defects or any trouble with rigging,keelbolts,chainplates etc. They are now 40yrs plus so want to know how they are still going condition wise....."
That is all relevant to how well a boat has been maintained. A great boat would none of those problems.
A good boat would not have osmosis, but could have some other fixable problems.
A poor boat would have osmosis plus a couple of the other problems.
Time to start looking and poking about. That is the only way you will find out. Here is not the place for that.
Here is the place for other stuff.
A great boat will cost you more.
Here is a great one. And someone to contact for further info.
www.spacesailer24.rizz.com/As for your trip.
A good Spacesailer will do that and many have. It all depends on your sailing skill ans time. That is not a trip that you can rush.
23 foot is a small boat. So, why are you thinking so small.
For some inspiration, here is a little trip on a 23 footer.
Gary