If your a UK citizen I would get all your JAA license here in the USA and then convert to a FAA. It wouldn't cost much more. You could go right in to a 737 flying in Eurpoe. Why would you want to make 20k at a regional when you could go right to a major in Europe. Or you can start at a regional here fly for 1 year then apply with the majors in Europe. You have a huge advantage.