Hey, i am looking around for parts to lower my 93. This might be kinda stupid but w/e. How do i determine how much off a drop? i have 17's on the car. Where do i start the measurement and where do i stop?

 

What would you recommend, Coilover sets or lowered spring sets? Is there any significant difference other than being able to adjust the coilover? Struts- can i run with stock- or do i need shorter ones?
Camber kits-what else is needed for lowering?