Put the money toward a legitimate ball bearing turbo! If you plan on keeping your engine free of compressor wheel pieces and would like to make the turbo spool up faster and be more efficient, a nice ball bearing GT35R will do the trick.
Besides, nitrous + boost usually isn't the easiest to tune, and if something goes wrong with your setup, it goes REALLY wrong. Not to mention that stock bottom end probably won't survive that amount of forceful power being shoved into it.