What you think will happen and what will happen are two very different things, as you will surely find out in your experimentation! Testing is good though...
As far as cams go, the previous comments are fine. The standard 2L cams are 'too hot' for say a 300bhp engine, but work fine. They'll give you a perfectly flat torque curve from 2500 upwards, depending on turbo choice. Although I doubt you'll be making 300bhp reliably on that CR