Well, IMO:

Stage1 = 270/280 Chip, Air Filter, Exhaust (15-17 psi)

Stage2 = 330 Chip, Green Injectors, Air Filter, Exhaust, 3 bar map sensor, -31 actuator, 4x4 intercooler (if it's a 2wd), and standard T3 (18-22psi)

Stage3= 330 Chip, Green Injectors, Air Filter, Exhaust, 3 bar map sensor, -31 actuator, 4x4 intercooler (if it's a 2wd), RS500 Style Intercooler, and a T35/T35 running more boost than stage 2 (22-26psi BUT MUST BE SETUP AT THIS POINT AS THAT MUCH BOOST IS PUSHING GREENS TO THEIR LIMIT)