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A better option might be King lows in front and rear. That will lower the car by 30mm front and rear. Thats the option i am going for due to steep drive way also.
Kings can supply you with rough front & rear HTG measurements to help you choose what is right for you. I hate the "dog dragging it's arse on the carpet" look personally, but each to their own.
The front of my car basically scrapes on my driveway now without been lowered, ill just go with them in the back for now. might look a bit funny but better than it sitting high as #### at the back haha
Slapped? I hear ya. I slap mine all the time on the door like a racehorse to make it go faster
$2 says you'll want to do the fronts asap after the rears