pistons, cam, valve springs ect..

hey peeps im nearing the completion of the external features of my 99 dx civic coup sohc . rims are all thats left.

now i cant wait to upgrade this little motor.
ive been doing some reading and im trying to figure out what would be some good tweeks.
im thinking for staters a cam shaft wondering what kind would be the best, with a budget in mind.(what would be the hp gain) but no crap from apc. im happy with all my tenzo products and not sure if they even make cam shafts.
anyway you motor heads know way more then me. what are some good tweeks and what is a good price for the products and whats a good price to get it all installed at once. help me out?

surely somone knows the best mods preformance wise for my car!

skunk2 and crower should be could stage 1 for like 340 cams only i think check out there sites