What material should I bring to my first meeting/interview with my prospective advisor?
It looks like you're set with respect to material things. What I would encourage you to prepare is an agenda -- which, in this case, means a set of immediately practical questions you need answers to, and one or two conversation-starters regarding your would-be advisor's research and that of his existing advisees.

Practical questions: what paperwork is involved in formalizing the arrangement, when should you report to start work, that sort of thing.

Conversation starters: "I read your recent 'Mathematical Models of Baskets' in the Journal of Underwater Basketweaving; are you still working on that?" "What are your current students working on, and is there anything you wish somebody would tackle?" and that sort of thing.