See the thing is, two major factors of the spring determine the ride height u get. One is the thickness of the coil, the other is the height of the spring or the spacing of the coils.
So, a shorter spring with many coils that are thin will offer a softer ride but will end up lowering ur car since its soft and weight will compress it.
The stock swift one in the front has few coils which are further apart but the coils are thick, offering greater resistance. The further apart coils also give it slight softness.
I would suggest try finding ones that have coils almost as thick as stock but are half an inch or so lower in height. With the weight of the car, this half inch gets amplified to an inch or a bit more.
Alternately u can find a taller one with many thinner coils but I don't know how that would work out, the spring would fully compress and bottom out I guess.
Sent from my GT-I9500