02 Celica GT help

I just got a celica gt, and im trying to get the most out of it, but this will be the first car i did anything to.. i've read up for years now, but i still need some input on what i should put into it. so far im looking in cold air filter and a catback exhaust, not brand specific right now though. anyone got any pointers?

oh yeah, and is there any point to getting a cold air intake if i plan on getting a turbo? wont that defeat the purpose of cold air, and should i just go with a performance intake?

if ur gettin a turbo anytime soon then forget the cai if it will be a while b4 u get the tyurbo then get a cai, headers, exaust and all that stuff. if i were u i would just save ur money up for the turbo either way i would get the exaust cause that will also work with the turbo.

If you're planning on getting a turbo kit.. don't worry about the CAI. What turbo kit are you looking at getting?

im looking at getting the HKS GT2530 Ball Bearing Turbo, 63T, .64 A/R, T25 Flange, Internal Wastegate, but im not sure yet, is there another one thats better? and what all do i need before the turbo? i know i need new valves, cams, and a clutch, but i know theres more....