Challenge front lip + diffuser: yay or nay?

[prodigue]

Hey guys,

I currently own a 2010 M3 coupe and have a recent itch to spruce up the look of it.

Rather than going crazy i thought it might be better if i just added a front lip and rear diffuser. I saw a couple of pics and the challenge front lip and rear diffuser looks the most awesome.

But looking at the front lip im worried that it might increase the front overhang and with it the chances of scrapping (car is used as a DD) My car is also mildly lowered with the eibach springs. Anyone can chime in on the clearance?