My advice is re-consider The Dream. Instead of circumnavigating, loop around the Bahamas
, then make the next trip farther in the Caribbean
, then Central America
. What's the fun of weeks of boredom in trade
winds, everyday getting farther from help?
Lots of quality blue water
boats, and some with tricky flaws. Get a really good surveyor
. Then be committed time and $ to make everything blue water
safe: the seacocks, hoses, clamps, hatches, wiring
.........A "good old boat" may be good, everything is old.