It's hard to answer all those things definitively, because of the level of play. The guys from West aren't required to make clean, crisp passes all the time because they are just so much better athletically.
But in general, all 3 future recruits can play/contribute at a B1G level. Conor McC has improved. He's good. Won't blow anyone away with his speed, but he's more athletic and knows how to use his 6-6 frame. He's knocking down 40+% of his 3's which makes him very good. Younger brother Patrick has the potential to be a college star. I said it. He's a legitimate 6-7 or 6-8 already, and can pass, dribble and shoot. As a sophomore. Good athlete. Sky is the limit for him. Wieskamp is outstanding, could help Iowa next year. Heck, he could probably help us this year. Legitimate size (6-6, sense a theme?), but is a much better athlete than given credit for. Can get off the ground and is comfortable taking the ball to the basket and drawing contact. I was very impressed with how unselfish he is/was, even with teammates who were inferior to West. He kept giving the ball up to the open man, even if that guy couldn't finish the shot.
The ceilings are highest for Patrick Mc and Wieskamp, but Conor is a very good player in his own right. It will be interesting to see what he decides with baseball and his future after another summer of baseball. All 3 will be contributors from Day 1 on campus.