Need help on lowering on 4th gen. accord

I need some help on a 4th gen accord (90 coupe LX). I'm debating between springs and coilovers. Which is easier to install and which is better in the long run? Also I want to know how far can I drop my car. I want to get 17" wheels with a 40mm offset wrapped in 215/40/17's. I want to know how far I can drop the car without having a camber kit and without having the fender rub. Also, are 215's too wide? Will they be directly under the fender or will they still be slightly tucked under? Any help would be great...thanks