Hello, here is a tip you should try if you want to get realm first goblin/worgen:
Get a RAF account and lvl a few chars on it and be sure that the account are linked with ur account (90 days) when Cataclysm launches so u can give ur worgen/goblin lvl 60 directly with "Grant youre friend a lvl".
They might fix it before cataclysm comes so you can not give worgens/goblins lvls, but lets hope not.