For handling: Get a good set of tires, change the brake fulids and uprate the pads. you dont need a fast road set up. waste of money. Get used to the car on what it can do with these simple mods.
Then you can buy coilovers and change the cambers afterward.
Performance: Get a good sounding exhaust, the gains on different exhaust are so small you want notice the difference.
check the sound out on youtube
http://www.youtube.com/watch?v=oVDlS5BW4x0.
Induction kits it can be a double edge sword. open cone has that awsome vtec roar but it can make your car feel sluggish.
standard box has better performace but no vtec roar. gruppem has the best of both worlds.
i cant say on what to buy but i have a gruppem.
you want get much or any gains on these mods you can loose bhp.
once you got a induction kit and the exhaust then get kpro or k100.
dont bother getting a manifold and decat or rbc the standard one are good enough. you want get much gains from changing these mods for price you pay for changing them. i wasted my money to find out the gains are crap. the most gains you going to get is from the remap. Mapping will change the car performace and definitely put a smile on your face.
hope this will help.