One option that I took, as a S FL resident: I had 90 feet of chain, which I used for a few years, but later, I cut it in half. Most of the anchorages demanded far less than 90'. My windlass accommodated line or chain in the wildcat. While the 45' was rusting away, the other 45' was not exposed to the salt at all. I usually washed the chain while in the locker as it sat on top of the 200' of nylon. S FL will have more rusting than the higher lats. More salt content in the ocean, year round boating, and a much higher avg temperature and humidity. Zinc is a soft metal, all the clanking and wildcat action, and link to link motion will wear away the protection.
This all said, if the wildcat can deal with a mixed rode, I'd do that.