Project after completing course

Hey guys. I have just completed the hp academy harness wiring/harness construction course having 0 knowledge of vehicle wiring before. I must say this course has totally transformed my understanding of vehicle wiring and what is takes to effectively power the EFI system. I have an mitsubishi lancer evo 4 with a 4g63 engine, and plan to undertake a harness build for that application. I'd be using an evo 7 ecu since the evo 4 ecu doesn't have tuning capabilities. I'm confident I can undertake this project however any guidance and suggestions will be tremendously appreciated.