How long for Belltech lowering springs to settle?

[Dragonist]

your spring is just a bit taller than mine by maybe 3/4 inch. The spring rate of mine is in the 650 range and my car sits like this so the spring rate of your springs must be close to a 1000 lbs.

So with the springs around 1000 lbs would that equal the 2 inch drop ?
I also found this chart on the 3rd gen forums, shows a the spring rate which would you say might be close to what I have? to add that what would be a good spring rate to run for the rear springs?

source:http://www.thirdgen.org/techboard/suspension-chassis/522426-spring-rate-selector.html