I disagree, Stu is doing 7 exercises which for the entire Leg complex isn't too much IMO. I've seen people do more for just their biceps The amount of sets he's doing suggests that he could move to a more hardcore method(one or two warmup/groove finding sets then an all out single working set with forced reps and dropsets) as he's doing quite a few on each exercise. IMO this comes with experience and he may not be ready for it (purely because you are progressing well without it Stu ).

Also, aswell as get stronger and more toned Stu is also trying to loose weight. He doesn't want to take a 5 minute break between 2 or 3 heavy sets, he wants to keep his heart rate up.

Therefore I think what Stu is doing now is absolutely fine and he seems to be progressing well.

Paul.