Zach,
I have to tell you I honestly believe that going to Higher Power in Dallas helped me get my interview. I met the hiring team lead and the head of HR while I was there during their Southwest class visit they do. The hiring team lead put her phone number and email on the board for us - if that isn't an advantage I am not sure what is.
"Great to get the invite--go get the job! But plan on some pool time--maybe just a couple months but the pragmatic guy will plan for 6-12 just in case."
I had a buddy that interviewed at the end of July that go the job and they are telling him to not expect a training class until early next year....as for me and my timing I would Luv to spend some time in the pool. A training date of about July or August would be perfect - I guess you have to be careful what you wish for (time in the pool) it could be a lot longer than you think.