I went with The Killers too but I had seen Nile a couple times already. No big loss. The show is great and its wall to wall bangers since it hardly ever changes which is a good thing if you have never seen Nile.
with 17 bands you could probably have alternating sets without overlap til you got to the last 5 or 6 names where they would need more time. The Cure did it 5 years ago with Pasadena Daydream. It was a dozen acts on 2 stages. Went back and forth with 5 min gaps til the small stage ended and then Pixies came on and play 75 mins. Then after 30 mins stage change The Cure played an hour 45. It was done by 11pm. Obviously Kraftwerk will have to be last cause they need the dark. So they could go on at 9:30 and go til 11? Pretty easy to give the first acts 30 mins and then slowly increase set length. I would say it wouldve been a bigger clash problem if you had 25 acts on the bill, but you dont. Really smart.