big power isnt going to happen. you need a IC first and BPV, then tune for more boost. after that headers, EWG, injectors and more boost and tuning. untill you spend more money or find used IC's your kinda stuck. best thing you can do is make a list of parts. everything you want, even if its a turbo and a motor build. then group thoughs parts together based on when you want to install them and tune. always look for used and look for best sellers and remember there websites where to buy.
Scott-2011 WRX 335HP 394TQ 93 VF52!