To be honest, I don't think I could ever be comfortable buying
a boat (or car, or house or any other expensive item) without seeing it in person. I might make an exception if the surveyor
is someone you've known for a while and trust, but to put all your faith in an unknown broker and an unknown surveyor
seems a bit too risky.
Also: Why pay for storage
for an extra year while you won't be using the boat? Better to take that money, and the money you'd spend to buy her, and the money you'd put towards boat loan payments during the first year, and toss all of it in some secure place (GICs, bonds, etc) until you're ready to own a boat.
There are always plenty of good used boats on the market. That's not likely to change in the foreseeable future, even though this particular boat will likely have sold by then.