stevie bee

I am thinking of fitting D2 racing coilovers to my classic shape impreza STI version 5. I am looking for any feedback on this suspension what its like on the road & also for track work. They mostly seem to come with 7kg & 5kg rated springs front & rear but i am thinking of having 8kg front & 6kg rear spring rates. The car is used mainly on road to & from work but driven spritedly & also occasional track use would these rates be good move or would higher or lower rates be better, any help appriciated cheers Steve.