They are very nice looking flies.
However I believe that the main target in the Cape Canaveral area is redfish and big ones too.
Those flies may be a little too small.
My choice would be red and white seaducers size 1 or 1/0. Spoon flies are also very good. Look for Dupree's Spoon fly.
Red fish are often found tailing in muddy water and a larger flashier fly is often needed just to be seen.