like u said u want a street car. now if u were building a drag weapon, i think the TD05 should stay on...
for a street car, i'd think the N1 turbos would be more than sufficient to do the job.
u're in H.K. right? get it tuned with someone who's good there. they know how to tune the F-Con Pro right? get the fuelling right and of course, the cams too. if you can't then just take it one step at a time, or save up and do it all at once.
the 2.8 would be a good engine, but dun think u'd need it with N1 turbos. unless u're planning a track car, dun think u'd need to get so extreme.
again, for street-trim, i'd go with N1 turbos. much easier to live with and work with. dun forget, these turbos see the JGTC cars produce 500 odd horses...so they're not that slack too