Passage south is a piece of cake...take your time, no need to dead head to Grenada unless you really want to. Grenada is great, you will love it.
While there you are in easy reach of some interesting and fun destinations.....Trinidad, Los Roques, etc.
Much rather be on the boat down south than haul and put up in BVI or PR.
Need help for the passage, south or north bound, let me know.

Capt. Bob
"If you reject the food, ignore the customs, fear the religion and avoid the people, you might better stay at home." -- James Michener