When you say, "Sail the Atlantic" do you mean on the Atlantic or across the Atlantic? These are obviously two entirely different goals. If it is the latter then you should look at boats like the Contessa 26 and Vega 27 which are very rugged and will take you just about anywhere and are not too expensive. If you want to sail on the Atlantic and to the Bahamas (from Florida I assume), a much wider range of boats would be suitable.
Get some experience and try to sail on a variety of boats and you will get a better sense of what you want/need.
In South Africa doing lots of boat stuff. Departure north from Cape Town around December 15th. Arrival in the Caribbean around the beginning of February, after 5300 miles or so.