I don't think there's much crossover between Parker and Young - Parker is supposed to be a 3rd tall type while Young is more your small-fwd pressure type who actually is playing closer to the center square as a flanker (which will hopefully help his scoring in coming weeks).
Young is definitely a risk to go early on, but he has one big thing going in his favour: his team is playing an out-of-form Blues this weekend. He's also named on the field in a team that isn't competing for finals and is thus looking to blood some young talent ROS, unlike, say, the much better scoring Hately at GWS. Of the current crop of 2nd gamers for me Young has the best JS; I'd like to reiterate though he definitely has risk so buyer beware etc.
Edit: Young going into his second game obviously.