again hold off for a while find your self a second hand ECU and get it tuned on the dyno for your car (i recomend emanage ultimate over emanage blue as you might find it hard to find a tuner). im not going to bull sh!t you its going to cost a bit but it will be well worth it.
i got my emanage ultimate second hand for +-$600 or so i cant remember but it came with all the harnesses. i had it installed and tuned for another $500. when you add up the costs of fuel pumps,regs,apexi SAFC,SITC,silicone spray,coilpacks,plugs etc etc you would have probly spent all of that or pretty close to already.
Good luck mate.