Buying in your home market is usually preferred.
You speak the language, you are accustom with the applicable law and tax situation, no overseas
money transfers. Visiting the
boat is easier, also getting quotes for modifications and
repairs.
You can be there during the whole process of
buying and refitting and still have you home / business running until you are ready for takeoff.
As I read your post, you have the
money for buying and comfortable living on board for a while. Why hurry then, just buy the
boat, enjoy it,
refit it and then drop the lines. You can sell your business when having a good offer, same for the house. You even can rent it and create passive
income for a while until you are sure you never want to get back.
Just relax and go step by step.