It's really dangerous to ask people if you should get cut or not. They will want you to do what THEY want, not what YOU want.
You already know that you want to get circumcised. That's all that matters. Is 16 a good age for it? You bet. Lots of uncut boys want to get cut, from around puberty on through final school years. Go for it.
That aside, lots of uncut boys find out they NEED to cut about then, because puberty, frequent erections and other changes finally reveal foreskin problems that were never discovered before. So many were never taught to keep their skins pulled back, frequently or permanently, so the penis head can stay clean and can grow and develop properly. Other remedies MAY work, but circumcision WILL work. Good luck.