If you boost in instances with raf, you can get a group of 4 up to 60 in about a weekend. Then you've got gifted levels to play with. Another evenning of levelling toons to 31.99 then you can gift those 4 to 60.99. If you don't have problems transfering a guy, you can easilly level a group, gift the 5th and transfer him to your main "boosting" account.