holyftype

hello, i just bought an s15 thats pretty close to stock. i have bought intakes intercooler etc etc and i'm planning to go upgrade to a gt2875r eventually. So a link upgrade is in my books so i'm planning to install it first thing to set the safety peremeters and have it tuned before actually driving it. what other products should i buy along the link ecu to support it? boost controller etc etc I'm just getting into ecu stuff and i dont have much experience with electronics. All my car experience has been with exotics.