There's a whole thread for FMA cosplay questions. Here's the link: FMA Cosplay thread
I'm sure you'll find many leads there. It's a long thread, but just do a search in the thread, and I'm sure you'll find something. Good luck.
Rumati ~ Casual Outfit [Hanasakeru Seishounen] + Rumati ~ Royal Outfit [Hanasakeru Seishounen] + Ayase ~ Phantasm Outfit [Chaos;HEad] + Ayase ~ School Uniform [Chaos;HEad] + Kyrie [Umineko no Naku Koro ni]
(pretty much all for ALA....x___X がんばります～)
Planned Cons/Gatherings:ALA 2010, Fanime 2010, AX 2010.