You'll still have to do all the JAA exams, 9 for CPL and 14 for ATPL, and then some flying depending how many hours you come home with, they are not easy and require a lot of study so take some study material with you. You can get a JAA over in Florida with Helicopter Adventures as well as an FAA CPL and FI rating, might be an idea to get your PPL here then build time overseas perhaps with a work visa (J1 in USA) and come home and complete the modular route, at least then you'll have some flying experience in the UK,just a thought!! Exams are a good £2500 for a proper course of home study. Good Luck! Try searching this forum for more information.