Mazda Demio 2010 lowering and support

Mazda Demio 2010
Hey guys, I'm new around here I need to know what lowering springs recommend for a 2010 Demio Japan version I don't want it to go down much only very little I also have the DE5FS steering wheel installed with paddle shifters and they don't work someone knows if they could be put to work ? Sorry if this is not the right group to ask since I'm new. thanks