I am nearly 13 years old. I am currently trying to figure out what Tanner stage I am in. My testicles and scrotum sag and are wrinkly. My penis is around 3.5 inches. I have fairly curly pubic hair, but it is a bit less coarse than the hair on my head. It is fairly dark-colored. I also recently started developing a slight bit of hair under my armpits.
The best way to answer that question is to use the Tanner Stage Calculator. It covers more details than what you’ve told me. But based on the items you listed, I would guess that you are in the latter half of stage 3.