That's what I did minus the tb because of mine being an 07 (slightly larger than earlier models) If you do it all at once you will save on tuning.First of all you need to pay for tune. If you pay for tune youd better install as much as you can to see decent gains. in mani and ex mani is a must have b4 you start to tune the car. VTC works alone but woth other mods it has cumulative effect.
Iguess minimum you need to have for k24 b4 tune is intake , TL TB, in mani , ex mani. Then VTC and cams.