Great stuff Brint!
I would add a few players to watch for us. You mentioned Ripperda but our best defensive linemen are DT Logan Green (#51) and DT/DE Kobe Klayborne (#94). Green is mostly a run stopper that is also a decent pass rusher, he's going to need to come up big if the Jacks want to contain Gillman. Lately Klayborne lines up at DE more but his normal position is DT, though he's undersized at 6'0" he is very disruptive from either position (first team all-MVFC).
On offense I'd also look out for RB Josiah Johnson (#34) & WR Jack Smith (#19). Johnson is a true freshmen who didn't even see the field until the Murray State game, but he quickly became a fan favorite in Brookings because he's a very hard runner that's not easy to bring down. He's also pretty good at picking up blitzers, and he's had a few impressive blocks where he really laid the wood to a LB. We will need more of that against Montana's blitzing style. Smith isn't nearly as explosive as Wortham but we like to use him in the same sort of ways, lining him up in the slot or out wide, or even in the backfield. He's a pretty decent kick returner too.
Another thing to look out for when we're on offense, is in the last two games we have been having our offensive linemen switch sides depending on which play we are running. I've never seen anything like it any level, but it's been working. UND has the top ranked rush D in the MVFC and we ran for over 200 yards against them, and had more success with it last week as well. I'm sure the two games have shown plenty of tendencies that your coaches have picked up on, I'm also sure we have some plays ready to go to counter those. Could be a fun chess match.
I'm worried about how we contain Wortham when we kick off. I'm hoping we can just boot the ball through the end zone, because in the couple games I've watched it looks like he's not afraid to return it from a few yards into the end zone and I'd prefer to not give him any chances. Our punter Max Pelham is maybe the best in the country, he averages 48.7 yards per punt with very good hang time. He and the coverage unit did an excellent job containing Taco Dowler when we played MSU earlier this year, I'm optimistic we can do the same this weekend.