stivic

I just did a GSR swap in my civic and I want to go turbo I dont want one of those small greddy turbos that only give like 120 more hp to the wheels i want to do a bigger turbo I just dont know what i need to do to set my motor up for one i mean I heard if i do like upgraded valves that brings compression up and for turbo a lower compression is better ive heard. So can anyone give me some advice oas to what mods shud i do before putting on a turbo. As of right now I have as follows, Greddy exhaust, aem V2 cold air, aem underdrive and unorthodox crank pulleys, venom intake manifold, type r throttle body and (stage 3 exedy racing clutch and flywheel which i havnt installed yet)