S40: Lowering, suspension vs springs

Hello, first of all, the search function did not make sense ;D have a Volvo S40 bj2007 this one has 38tkm down. Since I have now raised my 18inch rims with 225/40 tires and this looks like a jeep I want to place it discreetly lower that it looks sporty but elegant (!). Now I am already the whole time at googling and find nothing clever that helps me further…. Is it enough to buy feathers (Eibach/HR) or should I prefer to use a chassis (wind, or a rigid?), as I said it should come over discreetly/elegantly and not “protzig”. Which suspensions are eggling to recommend? Would also be nice if jmd had pictures of an S40 with 18 inch and a lowering of the new one mfg.