Lowering EJ9 still profitable ?

Hello guys… I’m currently driving an EJ9 BJ 1999 Facelift version and it will probably give way next spring to a BMW 325/328 coupe or Alfa GT. Now I ask if it still cleans up until then still to install lowering springs and what they cost so much. Does that scare people when buying rather off? And maybe I would spice up my boring rather gray interior bitsl in which I would paint the bending plastic parts in car color (silver metallic). t you ? (P.S. The vehicle is still in its original condition except for aluminium rims)