We always went into F45, North Palm Beach County General Aviation Airport with our MU-2. 12 miles NW of West Palm Beach. Three runways, two paved and one grass. Both paved rwys are 4,300'.
Lantana, FL (KLNA) is 4 miles south of PBI, a small GA airport, and probably the closest to the Breakers other than PBI. (F45 will be about a 45 minute drive or more, it's pretty far out there.) Just watch the presidential TFR's.