maybe the K&N and a set of underdriver pullies to start with . As far as the other items you listed they will not help alot till you make some other mods . Look through some of the pages of the forum and do some reading . There is ALOT of information that will help you . And then you can also show your auto teacher what things are !
Their are many threads on here about exhaust and pipe size , proformance chips and throttle body replacement .
BEST OF LUCK ! and welcome to AFM
I was Punxsy Stang before !