Well I will say that part of the issue, at least in my opinion, is that the FHSAA is so hell-bent on keeping just Dade County teams in that district. Between districts 14-16 in 7A, there are 18 schools. Make each district 6 schools. Yes some Dade schools have to be in the same district as Broward, but they do it in lower classifications already.
I'd do this:
-District 14-7A
*STA, Ely, Fort Lauderdale, South Broward, McArthur, Hollywood Hills
15-7A
*Nova, West Broward, Cooper City, Goleman, Mourning, Westland Hialeah
16-7A
Sunset, Doral, Reagan, Mater, South Miami, Miami Springs