That guy you've got pictured there is very cool looking, and also pretty creepy looking. I homeschool my son who is early elementary age. We just started history, and taking it very slow, lingering over whatever we like, because at this age history isn't usually taught anyway, so there's no pressure. Currently in prehistory and I am relearning with my son so much. We are just getting into the rise of mammals. Id love to take him to this museum. Ancient man is much more interesting than the little blip above cave paintings that was covered in school when I was a kid.
Happy travels. I think you do all the things on your trips that I would too.
I'm sure that you do a great job with your son. If you stay curious he'll benefit too!