For reference, he will never find a 1G DSM flywheel in NZ.
Basically, a 225mm (DSM 1G FWD type flywheel) available from many suppliers on your shores, or from AUS or JPN.
I run this clutch, and it's a pretty hefty pedal feel and takes some getting used to. You can slip it just enough.
MB1-HDSS ACT 2100 clutch and pressure plate
You will likey have to have new OEM master and slave cylinders installed along with braided stainless lines to keep the clutch disengaging properly, and assuming your pedal box isn't slightly worn out. Pull the clutch pedal back from it's rest position, does it move back more or have play up at the pivot? Check now before getting a surprise with a stiffer clutch installed later.
There are other clutches out there now with a lighter pedal feel/effort ... so maybe steer towards a Southbend option (US only?) or JDM/EDM equivalent.
I don't recommend a light weight flywheel like I am using currently, consider a stock style piece after a read off RRE website. Other options exist, but keep the weight of the flywheel above 8.2lbs ... stock was 15.x lbs. Lighter units will bring you in around 11lbs, and that may be more acceptable. Reason being as you modify, and if you cannot compensate with tuning (ala Link V3) then you can have stalling issues and poor idle quality as the torsional whip of the crank, causes lots of havoc in decel. Gear noise/Diff noise, stalling upon clutch in at the lights, etc. Quick shifting when you are really giving her, but makes it a bit of a beast in parking lots and stop and go. Where you actually drive the car the most!
Bits of advice from my perceptions as I played the upgrade path, step by expensive step.
Guys at this forum will know loads about the clutches working best on your side of the pond, and in NZ dollars:
http://www.4gtuner.com/
Most of the guys that were/are on GSR/Cyborg Club and/or the NZ Lancer forum when it was up, frequent there a whole lot. clutz and many others can find you mainland parts.