Aside from the brief discomfort of wearing children's clothing with an adult body, there was not much to adjust to. But thank you.

[He had gone out of his way to be kind to her and cheer her up when she was young and afraid. Even knowing what she would become. It's done a lot to raise her opinion of Lee.]

As to your question about the Kazekage...I assume that if you want to fight him fairly, that your challenge would be a friendly one.

[Of course, 'friendly' matches by shinobi standards can mean fighting to the knockout, rather than to the death.]