I'd buy it if I were you.
Seeing as you apparently missed the other
five "is it worth it?" posts on the front page of this forum you'll probably have trouble spotting a 40 ship convoy in calm seas and clear skies which might make the game a bit more difficult, but you'll also probably overlook anything that's wrong with it as well.
With mods it's perfectly playable currently. With a miracle we'll get a patch in two weeks or so and make it even better.