Your kitten sounds like a lot of fun. One of my cats is also quite young (7 months at the end of the week) and he has a lots of crazy moments.

When I first took him home he was very scared of one of my other two cats, now they get along fine, she is almost 4 years old and sometimes she gets as crazy as him. . When my sister goes on holiday she takes her cats to stay with me, for the first few days there is a lot of growling, but then things settle down, some of them might never love each other, but at least they tolerate each other. It just takes time.