For a 16G I would get:
Required: Up pipe ($100), Downpipe ($300), Tune ($150-$400)
Recommended: TMIC ($400), EBCS ($100), fuel pump ($200) and injectors ($400-$500).
Nice to have: CBE ($500)
There is a lot of debate over the break in of a turbo. I took it easy for about 250 miles on a low boost map. Then did the final tune. Some say that is overkill and dumb others say it is not nearly enough of a break in.