cat 5 hurricane proof roof

AS WE LIVE IN S DADE
WHERE ANDREW HIT IN 92
we need a cat 5 proof roof
we are on a low ridge so no flood or surge no water but rain

decided to go with what I can do without major fights with city hall codes

local roofing inspector has ok my 3 layers of PLYWOOD staggered SCREWED AND GLUED plan 1 1/2''+ thick [code is one layer nailed no glue tape edges]
sadly we need the dam membrane paper and NAILS LOT OF NAILS FOR THE DAM CODE over my new wood

THEN A PLASTIC MEMBRANE [that I think could and should replace the tar paper and NAILS ]
to prevent the topping from getting scratched and seal the nailed bottom part
TOPPED BY A 5 V SCREW DOWN STEEL ROOF galvanized
because I got a builders surplussed new stock deal
got the steel 5v roofing way more then I need 104 sheets 21 ft long cheap off an craig's list ad took two trips to naples so as not to over load the trailer

got to love change orders and we no longer need this new stock [they went with standing seam]

I only need 44 plus 15 for the garage

so edges will be tripled and every other sheet doubled in the middle of the roof plus the peak will be over lapped 5 ft got them so may as well over do it

[code is one layer of the steel]

topped and held in place by
with heavy 1/4'' x4 ''channel steel over the CBS walls to hold the whole thing in place
welded to the roof cap an other bit of steel and down to the base slab of the house ]not required by the code but the local inspector likes ]
that should be good for wind in a cat5 as the basic structure survived ANDREW BUT THE OLD ROOF DID NOT
nor will the 26 year old post ANDREW replacement currently leaking