What you are talkin' is peak of "the season" Expect max traffic, max prices, through out your trip... If you are willing to put up with the weather
, leaving in mid December will ensure minimum traffic, and max discounts at marinas
looking to fill otherwise open transient slips.
Heading north, April May are the peak snowbird months. Wait till late June/July to avoid the rush... Most early season hurricanes (historically) end up in the gulf.