Which MacBook do I need?

in the lines of macbook, macbook pro, and macbook air.

what i will be doing is:
- stuff for school (writing, powerpoint, etc.)
- basic video editing (basic!)
- internet (of course)
- photography stuff
- photoshop
- making cheer mixes

^^thats basically it.
so please give me advice on which one i should gett!!!
also what add- ons.
like = iWork; aperture 2, etc.