I've also got a feeling that because it was only 4 years since you last flew, most of your ground exams will still be valid. However, you'll have to trawl through LASORS yourself this time to find the definitive answer...
You will, however, have to take any of the FW specific exams. Off the top of my head, these will be Aircraft Gen and PoF. But neither will be too strenuous because you've already passed an equivalent.