Holy Smokes - that's already @ $ 7,000 rounded off and 8,800 with Killer B headers. This is without Turbo or any kind of labor priced into it.
Check out my FS thread...I listed basically every part that I did when the engine went. My total with labor and such was north of $10k. Alternatively, you could just buy my AW 08!
I'd have to sell my car to be able to buy another haha. But I'm planning to go the same route as you. I'll get rid of my car once Subaru gives the BRZ FI or Scion.