Im treading a very similar path Tony and all I would suggest is getting a grimmspeed 3 port ebcs and forget about the catch can unless you really want it - put the $400 or so towards something else - I doubt you'll be pushing the car to the point of needing an oil catch can. But the benefits of an ebcs are tangible after talking to a number of tuners around Perth.

The basic mantra for bolt on's is: TBE (3"), 3 port ebcs, pw tmic and cai (optional). Stick to them and you'll be farting through silk son.