A goal metronome setting is a measure to 80 - 88. This exercise has five key signatures suggested. Assign the first to Monday, the second to Tuesday etc. When you begin learning this exercise, play in four note chunks with a rest in between each group. This will help you learn the patterns in a relaxed manner.
Relaxation is one of the keys to beautiful, controlled playing.
Remember that you can do many of the keys in all three octaves. There are five or six keys listed in the book. I assign the first one to Monday, the second to Tuesday etc. I usually slur the exercise because most of the time we find patterns like this in the literature are slurred. I play these at metronome marking from very slowly to very fast.