What I was trying to point out to you b4 was that lowered springs have a higher 'sping rate" then a stock spring (stiffer) thats why you get less bodyroll through corners etc, and the stock struts are basically designed with comfort, more so then performance.
So you end up with a mismatched spring/shock combo... Ideally you would be able to get a set of springs and say a set of koni's/Bilsteins to suit, but you are looking at spending at least 1k...
At the end of the day you will end up with better handling ride with just the lowered springs, but shocks make a huuuggggeee difference in ride comfort and handling :)