245/45/17's all around,i dont have those yet but is it suitable to what my goal is?..

yeah i think, thats pretty big i was thinking bout getting 215/45/17 just to be modest lol. Get the bf goodrich tk's or the bridgestone potenzas s2

Those size tires will rub in the front of the FC. You would need to at least roll your fenders.

I would tend to advise a braking upgrade when you are driving around with

400hp over a suspension upgrade. Stock suspension is beyond most people's driving abilities, but one could always benefit from better brakes

when driving around with double the horsepower the car came with.