Oh boy are you right! The barking and jumping on people will get SO out of hand without intense socialization and lots of obediance! I rescued an extremely hyper, untrained but loveable pit at 8 months. He weighed about 80 pounds. I worked with him alot, but also didn't have time/money for obediance. I used books, and taught him quite a few things, plus, I took him EVERYWHERE with me. He became quite socialized, but, I was never able to get the jumping on people under control. One day, he ran up to a lady on the street and jumped on her. She began to scream and hit him with a broom. He scratched her arm, I can't tell if it was with his claws or if he actually nipped her a bit, it was a small wound. Anyway, he ended up getting seized by animal control and euthanized! It was devastating!
My point is that you HAVE to get those behaviors under control because they WILL end up being a huge problem! Good luck! Dozer is totally adorable and I'm sure that you'll do a great job. My vote is for Shar Pei/Pit.