This is a morbid question because it asks me to pick which teenager I want killed and chopped up into little pieces. With that said, I would definitely pick Roland. That guy has zero redeeming qualities about him. He is a bully through and through. He preys on the weak, and uses that fear to rule over other teenagers. Additionally, Roland isn't scared of selling out his friends and allies, if it secures him something in return. For example, Roland agrees to fly the Admiral, Connor, and Risa to a hospital in order to save the life of the Admiral. Roland agrees to do it because he plans on turning in Connor and Risa for the reward money. Next, Roland barters with the cops in order to secure his own safety and even more money. Roland tells the cops about the Graveyard and all of its 400 Unwinds.
Roland looks the Juvey-cop in the eye — no shame, no fear — and boldly presents his offer. "What if I told you I know where there are more than four hundred AWOL Unwinds? What if I helped you take down a whole smuggling operation? What would that be worth?"
I would definitely choose Roland to be unwound. The world is a safer place without him in it.