Rep Power: 258

currently my 01 coupe is all stock and I wanted to lip kit it up, but I also drive across dips and speed bumps daily and would like to know how much the aero side skirt and especially front bumper would take away from current factory clearance and if that would be problematic to me? If anyone else can reccomend me other lip kits and bumper kits that wouldbe ideal as well.
my car is black, so does that mean i dont have to paint the kits?

I also have a hard time seeing/judging how much space is between the back of my car to someone else's car, would adding a rear spoiler help me make better judgement? Thanks