St. Lucia will accomodate you. I think St. Maarten is tough with that size. I'll be in Rodney Bay next week (or the week thereafter), as I store my boat there now; having given up on the BVI and Nanny Cay. This year's hurricane season predictions look generally good, and you can get a cheaper storage rate at Rodney Bay if you stay in the water.

(Watch the great detailed analysis of the overall weather pattern this hurricane season here)