I've been lifting for a long time, and I admit, I just started stage 2 and it's got some exercises in it I had NEVER encountered before. They are pretty killer, but I like the stage a lot better than stage 1. You'll get the one point rows down after some practice; you're right, it's a lot of core balance. Also, I found that bending the standing knee just slightly gives me better control. And really tighten the leg muscles along with the core. These are some of my favorite lifts now.
Did you practice the Front Squat Push Press? Another killer one!