I think, as you're not coming back as a professor, you would be using the Elsewhere levels.
But...
You are entitled to all the levels you had as a student, plus any you would have earned in your seventh year (I think you passed everything, so that's +6). Which would certainly be higher than the standard 32.
Or...
You can put in a request for the "auror" levels, using your previous status as a professor as justification, and remembering to respond to the "auror" RP sample, not the standard "lost child" one.