Can't really comment on your itinerary, but I'm going to be down there with my wife and kids during the same time-frame. We are sailing from St. Lucia to Grenada from February 3 to the 13th. Our current plan is to leave Marigot Bay early in the morning on the 4th (weather permitting) and and make it all the way down to Bequia that day. Then work our way down the islands from there ending up at True Blue Bay on 12th or the 13th. This is our first time sailing the Grenadines and we are looking forward to it. We'll be on a Lagoon 42 from Horizon Yacht Charters named Island Life - stop by and say hi if you see us.

Matt