Some bad news.
Maxing out stats and being BiS requires a level 85.
A level 60 is required for nearly BiS.
While this won't be mandatory, you'll need at least a level 60 for the next best enchantments throughout multiple slots (Gloves, Legs, Chest, Shoulders). This becomes rather unfortunate and uncomfortable because it now makes this bracket practically require a high level character to help boost your 50. Nonetheless, we'll all be helping each other out getting what we need. The leg enchant, unfortunately, is something that each person must do for themselves via Cata leg armors + BoA legs.
My highest level character before today was actually 70, and I'm almost 82 heading to 85 now on a character I will likely NEVER play after this. Anything for the sake of twinking!
Twink long and prosper.