I would consider it a Level 2/3 or 3, Maria. Yes, the exercises are mostly standard, but I have very few students (if any) who could do most of these with the pacing and variations. The airplane with leg springs, for example, was very challenging for me. I liked it; glad to practice it. But many students struggle with airplane using the roll-down bar so I probably would not use this version at all with students. Thanks for asking.
Holly ~ thanks for taking the time to respond. You are right, exercises like Airplane (especially with the Roll-Down bar) can be very challenging. I have changed it to a Level 2/3, still contemplating whether or not it should even be bumped up to a Level 3.