I would go with meth inj. and or cams with a flash! Sounds like a pretty big gain in power!!

 

fuel pump and relfash

 

a fuel pump should be on the top of your list, especially when you are running higher than stock boost.
next really depends on what direction you want to take your car... will it see street/strip/roadcourse/autox?
searching around will show you that this topic has been covered 1 million times and then some.
also with the search button, you'll see the Warrtalon/Buschur package come up ALOT! this is because this package has PROVEN results on the track & the dyno. pm Warrtalon if you have any questions.