when i get my sr, would these cams be worth the 500$, how would the driveability be? rough idle?

also how are ferrea valve spring kit? is there another set better?

i was thinking the hks cams , ferrea valvespring kit , hks r.a.s., arp head studs.

its probebly going to be a long time until i get my sr20det, but just doing my homework

thanks in advance
-aka-