Well, I would say start off by reading those first two links in my signature down below!!
Don't worry about bigger injectors until you get a bigger turbo.
Seriously, read those links...I know you may get bored and just start buying stuff but it would be best to spend that boredom reading those links in my signature before you buy anything else!
Is the car currently stock? Can you list what all you bought so far. It will just make it easier for us to see it all, I was getting kind of confused reading through your post!