yes changing the pads will lower the car even more
depending on what options your car has etc, that's what #pads you have there stock, do a search there's a thread about the exact measurements of different number pads
each car is different but
what i suggest you do is lower the car change springs/shocks, then see how it looks feels, if it still needs adjustment just lower the pads where needed for great stance and great look and of course better performance