I did very similar man maths...in my 20's i used to race...am now 44 and my rose tinted memories were way off....you will get the drop, adjustability, etc., what you won't get is factory like ride i don't believe. My car is mostly on road, few track bits a year and not sure what your use is, but if you are on the road a fair bit i'd drive or go out with someone to see if you like it first on coilies. On the track my car drives beautifully, however the trips to and from are a bloody nightmare for me. What i should have done is gone for uprated dampers/ springs as i rarely adjust anything on it...By all means get coilovers, but make sure its not going to ruin your experience of driving is all i'll say.
