Hi there,
There's a parallel thread running under the title NAC, go look there. I just came back from three weeks in Florida and in November to do a PPL. You're planning too far ahead, I think! Anyway, I went to Naples, I had a great time, and I would recommend the school, airfield, location, etc..
If you're based in the UK, then I'd recommend doing a couple of hours at a UK school first just to make sure it's what you want to do (it will be, of course) and do your written exams before you go. Go search the archives if you need to, and watch out there are one or two arguments going on out there; don't pay too much attention to them.
Happy flying, dpm.