In years past I would have said that Vero was a great place to plant a lychee. Be aware, though, that we do have a new lychee pest in Florida known as the lychee erinose mite. When it was introduced to Brazil, lychee production dropped by 70%-80%. The state is currently working on an eradication program and many counties are quarenteened in an attempt to keep the pest from spreading. You might consider some other options for now, but reserve a spot or two for lychee if the eradication program is successful. Atemoya, Jaboticaba, Loquat, and Indian Jujube are some other fruits that you might consider.