I just went through the main shop. I thought back to when I was 16, and if I had access to the SC shop back then, what would I want that is also listed as 16+?
Below is the list of what I would have wanted that is also currently listed as 16+
Ascension
Beyond Limitless
Chosen
CWoN
Daredevil
Dragon Reborn
Emperor Fitness
Survival Instinct
Limitless
Mind’s Eye
Quantum Limitless
Plenty enough to keep a 16 year old busy until turning 18.
As a side note
Although the following are listed as 18+
I’d likely have been tempted to get Genesis, as one reason for Genesis is to help answer the question “where do I want to go in life”, and that can be a big question for people 16 to 22 years old.
I also would have been tempted to get Revelation of Dreams and Revelation of Mind.