It depends on whether you need an approved course or not.
If you are very experienced (ICAO ATPL & more than 1500 hrs on two pilot aircraft) you can study how you like as long as you pass the exams. Under these circumstances you could do the distance learning phase with us and then either study on your own or take advantage of a Florida FTO for the brush-up. As to the exams, they have been sat in Orlando for the last few years under the stewardship of Delta Connection Academy. I think Delta are pulling out/have pulled out of JAA training, though, so the arrangements might change. The only remaining Florida FTOs that offer groundschool are Naples and Helicopter Adventures. One of the Naples regulars can probably tell you the current status of the exams, how often they intend to run the sittings this year and what the surcharge might be.
At the other extreme, if you have a PPL you will need to follow an approved course. This would mean that, if you do the course with us, you would have to come back to the UK to do the crammer course & it would make sense sit the exams while you are over here, that's what most of EFT's students do. If you really want to do the exams in Florida perhaps you should consider doing the whole course with Naples.