Softer Coil Spring Rates

[79T/Aman]

It MUST be understood that rate it load over distance, if you change the load or the distance you MUST change the rate accordingly.
First advise I can give you is to not even look at those chart recommendations they are utterly useless because they do not take into account YOUR car, there are many variables between suspension systems wheel rate ratio is a big one.
Secondly when I see recommendations of stock rates for lowered cars it makes me cringe, remember load over distance, if the car is lowered the DISTANCE changed in turn you MUST go up in spring rate you you will bottom out hit bump stops, etc.
3rd lowering a car requires stiffer shorter springs AND shocks to reduce suspension travel, unfortunately this limits the range of motion to convert shock energy into motion energy to ultimately dissipates it as heat.
4th you need a more linear shock valving, adjustable shocks does not mean you can adjust it to where it needs to be, the valving rage has to be correct and the softer you go on the spring the higher the shock velocity when you hit a bump creating more resistance from the shock (look at a shock dyno graph velocity vs resistance)