Re: Sea trout set-up?
Bh- Local guys can give you a better idea about what fish to expect-- and of course a lot will depend on weather too--- but it sounds like you found a great spot-- and it's probably a great spot because of the structure that it offers, so hit it hard-- as gator says there will likely be some fish around, and it may hold some--- and that could be anything--- reds, specs, or snook, but also stuff like jacks (jack crevalle), ladyfish and snappers.
You shouldn't need a bite tippet for reds-- your 15lb mono should be fine, but you might also want to carry something like a pack of 30 or 40lb Hard Monofilament from Mason or Maxima to use as a bite tippet for stuff like snook etc if you run into them. Mason is sold in 10 yard coils for around $3, Maxima in 27 yd coils for $7. If you can't find a fly shop while you're down there, often bait and tackle shops will carry it too.
I'm sure some of our FL locals could give you more advice on what to expect and where to look when you're down there.