Gregory and Finnin are almost guarantees to play immediately.
At RB position, either Adams or Newby will be RS'ing. Depends on who wins the #3 spot. Its going to be hard for them to get #2 over Cross, but its possible.
DLine, I believe all will RS. McMullen, Gregory, Moss and Ankrah will be more than enough at DE, unless one is to become injured. Valentine, Guy, Curry, Williams, and Uher will be enough at DL, unless one was to get injured. I believe these guys will be in full rotation of eachother and a couple may play all 4 quarters with a breather or two. If a kid doesn't want to RS, then throw them into the mix, otherwise, teach them the plays and build them up.
LB, its a toss up on that position on who is going to get RS. I think Bandares, Love and Newby could be instant contributors, BUT your also looking at Anderson, Brown, Afalava, Santos, Pirman and Roach getting starting jobs or being second in rotation from eachother. If that is to happen, you would only think that our young LB crew would be RS'ed or put on special teams to get their feet wet for the game.
Safety: Singleton is pretty set that he won't RS. If I was Corso, I would tell the kid "Not so Fast!" because you can't count Dixon, Martinez and especially Gerry out. Safety isn't an easy position to play here. A TON of responsibilities. Way more than the 'normal' Safety. My guess, you will see 2 of these kids get moved to CB because they won't understand how to manage the secondary. Not a knock on them, but its probably one of the toughest positions to play here at NU.