CoJoe, I would imagine that would be a very good way to go about it, particularly if you are very good on the course. They won't take on FI(R)s directly although I know a couple of blokes who have gone there with relatively low hours and no IR (but they did have IMC). If you are not able to go on JEFTS own FI course I would recommend getting a job at one of the flying schools involved in the RAF flying scholarship scheme - I particularly recommend Tayside Aviation who are the prime contractors - the reason being that they teach the cadets the CFS syllabus, which is subtly different to the JAR-AOPA one and virtually identical to the JEFTS one.
Cheers DB6