Grab them, they are in the exit row, no requirements and have lots of leg room. The window seat passenger can exit with not much effort over the sleeping aisle person.
I would love to grab the seats in row 24. My only concern is whether the flight attendants might not consider one of the four in my group as capable of assisting in the event of an emergency. It states on the Qantas website that they can move you out of that seat and into an Economy seat. That would be really awful and I don't want to risk it for that individual. Your thoughts?