to be honest - i would get a WALK kit, big brakes and LSD before i go near stage 2, and only then would i do it if the insurance wasnt a complete joke.
as it stands am the most broke ive been in 5 years after spending money i dont have on a remap and other bits and pieces on the car so will be a while before i can afford it and ive still got a long time before ill get bored of the performance!