He's off to an excellent start!
I remember building her at about his age. I got to do a dio display at school as we were studying her. My project patner and I used different color blue tissue paper to put the model in the "ocean". We also did the Hindenburg later.
Your son looks like he is both taking it seriously and having fun. Good! It will hopefully be a lot of fun for him and enriching. I've read some disturbing numbers about our hobby recently. Declining. Just old men. Good to have fresh young minds.