If you had to run a 4" drop you could run Koni's and use Eibach's or another good spring and use the lowest Koni pearch to achieve this level of slam--however at a 4" drop I'd have to agree its too low you will bottom out the car before the shocks on those settings, LOL.

PS--Koni's Sports are mass money too--I have some but way pricey for a shock--if you are going to run $600-700.00 shocks spend the pidley cash and get good springs to go with them please!