Congrats on the upgrade sir!
Welcome to the forums. Read around and search, search, search before just throwing things on.
Intake and CBE aren't a bad start... I never went with either until I went full stage 2, which is only one more part, the downpipe. I figured if I'm going to have a good amount of the plumbing off of the car I might as well do the downpipe too. I honestly think that if I would have gone with just intake and CBE that I would have been disappointed and ended up doing the downpipe anyways, being that it is the component that is the most restrictive in the stage 2 component replacement list.
If you have a hatch, which has a less restrictive cat-back on it from the factory than the sedan counterpart, you can honestly go with just an intake and downpipe to reach stage 2 safely. You don't really need a cat-back (on a hatch) until you go beyond that power level, at least so I am told by a few vendors and other experienced individuals.
Stage 1 can be attained by simply reflashing the stock ECU with an OTS (off the shelf) map from Cobb.
For the GR chassis, stage 2 base requirements are intake and downpipe (and CBE if you have a sedan).
Oh, and
definitely do NOT do any of these upgrades without immediately tuning the car for it... it doesn't take a grenade to pop a ring-land with our glass pistons... more like a sneeze. :lol: Well not quite that bad, but things can definitely go awry without tuning for the mods, it is
very important for these cars.