First, you've got 3 more alts with "bundle of sticks" in them to be changed. Second, next time you are asked to change your name for bigotry, don't go on a bigoted rant in chat.
The ban length will be reduced, but only after the names are changed and you can prove that you understand why you were banned instead of being allowed to hop out and simply change your name as was politely requested. The ban was completely due to your reaction and not the name change requested.